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Mathematics Questions and Answers April 01, 2023

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Court Common Pleas Judge Disposed Appealed Reversed P(Appeal) Peter Tom 2715 123 12 Angela M. Mazzarelli 2570 132 12 Richard T. Andrias 1467 53 1 David Friedman 1982 33 2 John W. Sweeny Jr. 3124 154 5 Rolando T. Acosta 2714 132 14 David B. Saxe 3326 53 8 Karla Moskowitz 3353 163 1 Dianne T. Renwick 2695 121 12 Leland G. DeGrasse 2706 86 5 Helen E.

A random sample of 40 videos posted to YouTube was selected. A month later, the number of times that each had been viewed was tabulated. The mean number of viewings was 144 with a sample standard deviation of 275. Find the upper bound of the 99% confidence interval for the mean number of times videos posted to YouTube have been viewed in the first

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For a standard normal distribution, what is the probability that z is greater than 1.75? A..4599 B..0401 C..5000 D..0901

Which statement does not belong? Excel finds the Pearson Correlation Coefficient using the fx function Correl 2. Excel finds the Pearson Correlation Coefficient using Data Analysis function Correlation. 3. Correl can be used for a single or multiple data sets 4 Danta Analysis function Correlation can be used for a single or multiple data sets

The mean cost of domestic airfares in the United States rose to an all-time high of $385 per ticket (Bureau of Transportation Statistics website, November 2, 2012). Airfares were based on the total ticket value, which consisted of the price charged by the airlines plus any additional taxes and fees. Assume domestic airfares are normally

Hi could you please help me with these questions it's for unit BSBLED401 12:26 4G N .1. $ 76 docx (4) - Read-only . . . Read Only - You can't save changes t... V BSBLED401 Develop teams and individuals Assessment Task 1 Question 1 a) What does the NQS aim to achieve through Element 7.2.2? b) Provide three examples of how an education and care
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Find the midrange for the given sample data.Listed below are the amounts of time (in months) that the employees of an electronics company have been working at the company. Find the midrange.

Activity Immediate Activity Time Predecessor A -- 3 B -- 4 C a 4 D A 6 E B 5 F C,D 4 G E,F 7 Compute the slack time for activity C. 0? 4? 2? 3? What is the latest finish time for activity F? 9? 7? 13? 16? What is the latest possible time that Activity E can be started without delaying the completion of the project? 8? 3? 7? 9? Can someone assist

A mechanical press is used to mold shapes for plastic toys. When the machine is adjusted and working well, it still produces about 8% defective toys. The toys are manufactured in lots of n = 100. Let r be a random variable representing the number of defective toys in a lot. Find the probability that between 7 and 9 defective toys are produced in a

A catering service offers 9 appetizers, 5 main courses, and 4 desserts. A banquet chairperson is to select 5 appetizers, 2 main courses, and 3 desserts for the banquet. In how many ways can this be done?

The number of degrees of freedom in a test of a contingency table with 5 rows and 3 columns equals: 4. 3. 8. 7.

MTH 525 Introduction to Mathematical Statistics Spring 2017 Problem Set # 1 This problem set is due on Thursday, February 2, 2017 at the beginning of class. 1. Let X1 , X2 , . . . be a sequence of independent random variables with E(Xi ) = and P p n as n . Var(Xi ) = i2 . Show that if n2 ni=1 i2 0, then X 2. (a) Show that if T tn (Student's t

In a poll to estimate presidential popularity, each person in a random sample of 1,350 voters was asked to agree with one of the following statements: 1.The president is doing a good job.2.The president is doing a poor job.3.I have no opinion. A total of 575 respondents selected the first statement, indicating they thought the president was doing

In a left-tailed test, a statistician got a z test statistic of -1.61. What is the p -value? .4292 .0709 .0537 .0301

Four microchips, two of which are defective, are to be placed in a computer. Two of the four chips are randomly selected for inspection before the computer is assembled. Let X denote the number of defective chips found among the two inspected. (a) Write the probability mass function of X in a table. (b) Use the table to find the probability that

A company that produces white bread is concerned about the distribution of the amount of sodium in its bread.The company takes a simple random sample of 100 slices of bread and computes the sample mean to be 103 milligrams of sodium per slice. Assume that the population standard deviation is. What is the MARGIN OF ERRORassociated with a 98%

The following data shown in Table 2 are the semester tuition fees charges (RM000) for a sample of various private colleges around Kuala Lumpur, Klang and Putrajaya. At = 0.05 level of significance, can we conclude that there is a difference in the mean tuition fees for the three different areas? Table 2 Kuala Lumpur (RM000) Klang(RM000) Putrajaya

Scenario A: Budgeted and Actual Debt Service Transactions Rainbow City is authorized to issue $10,000,000 4% regular serial bonds in 20x0 for the construction of a new police station. The bonds mature in equal annual amounts beginning on January 1, 20X1, for 10 years and pay interest on January 1 and July 1. The funds to pay the interest will be
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A research report concludes that there are significant differences among treatments, with F(2,24)=8.62, p < .01. If the same number of participants was used in all of the treatment conditions, then how many individuals were in each treatment? 7 9 10 30

Failure testing of a steel alloy resulted in the following S-N curve: N=(1.23*10^28)S^-14.85 where N is in 1000 cycles to failure and S is the stress amplitude in 1000 psi. The steel alloy is to be used in the design of an automobile engine that under normal use will experience 20 cycles per second under a stress amplitude of 35,000 psi. It is

ASP cannot guarantee an optimal solution to a simulation optimization model because a.the optimization problem will have only one local optimal solution due to the linear relationship. b.of sampling error resulting from nonlinear relationships. c.it is not possible to compare solutions across runs. d.of sampling error resulting from the presence

#1: Introduction to Statistics. 1. Explain the difference between a statistic and a measurement? Give a definition of each and an example of each. 2. Name the scale of measurement that applies to each of the following situations (Nominal, Ordinal, Interval, or Ratio), and indicate if that measurement scale is discrete or continuous: A. James hall

Data Mining Review Questions / XLMiner Labs Neural Nets 1. Predicting Prices of Used Cars. The file ToyotaCorolla.xls contains data on used Toyota Corollas for sale during late Summer of 2004 in The Netherlands. The dataset has 1,436 records containing details on 38 attributes, including Price, Age, Kilometers driven, Horsepower, and other

Find the following matrix product if it exists: I know it's a 2x2 product matrix but I cant get the calculations right. -4 -5 3 5 3 -2 1 4 5 2 -2 3

A random sample of 49 lunch customers was taken at a restaurant. The average amount of time the customers in the sample stayed in the restaurant was 33 minutes. From past experience, it is known that the standard deviation equals 10 minutes. With a .99 probability, how large of a sample would have to be taken to provide a margin of error of 2.5

Look for a quantitative study in a database (anyone you want). The search should be: health promotion or health education. Then: Post a very brief description (13 sentences) of the article you found and address the following: Describe how you think the research in the article is useful (e.g., what population is it helping? What problem is it

{Exercise 6.11} Given that z is a standard normal random variable, compute the following probabilities (to 4 decimals). UseTable 1in Appendix B. P ( z -1.0) P ( z -1.0) P ( z -1.5) P ( z -2.5) P (-3 < z 0)

The median for the given set of six ordered data values is 29.5 5 12 27 41 48 What is the missingvalue?

According to data from the 2010 United States Census, 43.1% of Americans over the age of 65 were male. Suppose Maria, a researcher, takes a random sample of 60 Americans over the age of 65 and finds that 18 are male. Let p represent the sample proportion of Americans over the age of 65 that were male. What are the mean and standard deviation of

1. A class contains 30 students 10 are female and Jamaican citizens, 12 are male and Jamaican citizens, 6 are female and none Jamaican citizens, 2 are male and none Jamaican citizens . A name is randomly selected from the register calculate the the probability that the student is a Jamaican citizen given that the name was a female. 2. If a name is

Question 1: Test for goodness of fit (Please assist in helping me with these questions which I need to check my own answers against) A sociologist wanted to determine whether there was a difference in the amount of time children aged 57 spent watching television each day. Check the following data for evidence that the number of minutes spent

hello this is my quastion i need help in it i need it by tommorw thank you 9. The table below shows the life expectancy for an individual born in a country in certain years. g) h) j) Year of Birth Life Expectancy Year of Birth Life Expectancy 1930 59.7 1940 62.9 1950 70.2 1965 69.7 1973 71.4 1982 74.5 1987 75 1992 75.7 2010 78.7 Decide which
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A film distribution manager calculates that 9% of the films released are flops. If the manager is correct, what is the probability that the proportion of flops in a sample of 701 released films would be greater than 7% ? Round your answer to four decimal places.

The 68-95-99.7 rule states that in a normal distribution: A . The probability of a random value to be within 2 standard deviations above the mean is 95% B. The probability of a random value to be within 2 standard deviations above or 2 standard deviation below the mean is 95% C. The probability of a random value to be between 1 and 2 standard

SO 520 Final Case Study You are looking to open up a cupcake shop in a high-traffic tourist area. In order to get your business open, you will need investors to provide you with $250,000 dollars. You are going to be making a pitch to a local bank for a portion of the money. The business environment you are looking to operate in is one in which

From experience, an airline knows that only85% of the passengers booked for a certain flight actually show up. If7 passengers are randomly selected, find theprobabilitythat at least6of them show up. Carry your intermediate computations to at least four decimal places, and round your answer to at least two decimal places.

in a simple linear regression model y = Bo + BiX + E. We assume that the following is true about the E value. A. That the sum of all error (E) will = 0 and thus not effect the regression. B. That we must and in the total value of all errors (E's) C. That there is only one error (E) and it's value is always 1.

In research the concept of p value is useful to interpret the results of a hypothesis test. Define p value and discuss its relationship to the calculated value of a test statistic such as Z . If you were reading a professional journal article and saw a p value of 0.001 would this support or be inconsistent with the research hypothesis of Ha?

Find the value of z such that 0.7286 of the area lies between -z and z . Round your answer to two decimal places.

An ad for airbags claimed that proper usage of air bags reduces the chance of fatality in a car crash by 250 percent ? Is there anything wrong with this statement.

Journal Article You should save your ECO578_SummerII_2017\" file as \"Lastname_Firstname_ You can submit your work either as a PDF or WORD File (Make sure Only ONE file is submitted) You can attach your Excel file as your appendix (only ONE Excel file is allowed) *Only one Word or PDF file and one Excel file should be submitted in the drop box

1.Match the following: __All points lie exactly on a straight line 1.The correlation coefficient r is positive __The linear association between the 2.The correlation coefficient r is negative variables is weak 3.The correlation coefficient r is close to 0 __Larger values of one variable corresponds 4.The correlation coefficient r is equals 1 to

A simple random sample of 600 individuals provides 200 Yes responses. a. What is the point estimate of the proportion of the population that would provide Yes responses (to 2 decimals)? b. What is your estimate of the standard error of the proportion (to 4 decimals)? c. Compute the 95% confidence interval for the population proportion (to 4

2. (12 points) Thirty-six people have been invited to a party. Each invitee meets all other invitees individually, and a single picture is taken during the short conversation between each two guests. (a) Showing your work, determine the total number of pictures taken. (b) If 12 invitees are from out of state and others are local, what is the

Can you show me how to solve this question? Suppose you are at the airport waiting to receive your friend. The announcement says that the flight is expected to land in another 20 minutes. Mentally you are curious with the following questions, depending on various scenarios. What is the probability that the flight lands in between now and the next

Discuss the rationale for hypothesis testing. Refer to the comparison of the assumption and the sample results.

Determine whether the statement is based on census data or sample data. Based on a randomly selected group of 500 patients with highcholesterol, it was found that67% have heart disease. A.Sample data B. Census data

Find the standard normal area for each of the following (Round your answers to 4 decimal places.) : Standard normal area a. P (1.23 < Z < 2.13)b. P (2.02 < Z < 3.02)c. P (-2.02 < Z < 2.02)d. P ( Z > 0.52)

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A researcher wishes to estimate the proportion of X-ray machines that malfunction. A random sample of 275 machines is taken, and 79 of the machines in the sample malfunction. Based upon this, compute a 95% confidence interval for the proportion of all X-ray machines that malfunction. Then complete the table below.Carry your intermediate

Chapter 4: Hospital Pharmacy Practice Learning Outcomes Describe differences between centralized & decentralized pharmacies List at least 2 types of services provided by hospital pharmacy departments Explain purpose of pharmacy policy and procedure manuals List at least 3 different methods of drug distribution Learning Outcomes List components of

A machine that manufactures automobile parts produces defective partsof the time. Ifparts produced by this machine are randomly selected, what is the probability that fewer thanof the parts are defective? PLEASE ANSWER ASAP I WILL GIVE A HIGH RATING

BIL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 MATRIC NUMBER 244540 245529 246458 244423 245610 245295 247329 248395 244518 245619 245612 244499 245526 245202 248021 248042 244323 243251 242952 247528 245412 245277 247529 247549 247548 ACADEMIC PROGRAMME LAW MEDIA TECHNOLOGY FINANCE LAW CREATIVE INDUSTRY BBA (LOGISTIC &

Landmark Coal operates a mine. During July, the company obtained 500 tons of ore, which yielded 250 pounds of gold and 63,400 pounds of copper. The joint cost related to the operation was $500,000. Gold sells for $325 per ounce and copper sells for $0.85 per pound.Allocate the joint costs using relative weight. With these costs, what is the profit

According to Consumer Digest (July/August 1996), the probable location of personal computers (PC) in the home is as follows: Adult bedroom: 0.03 Child bedroom: 0.15 Other bedroom: 0.14 Office or den: 0.40 Other rooms: 0.28 (a) What is the probability that a PC is in a bedroom? (b) What is the probability that it is not in a bedroom? (c) Suppose a

Estimate what you think the r value would be and explain why.Please provide exact calculations with correct answers. Thank You \f
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Answer the following questions: Jackson even-numbered Chapter exercises (pp. 220-221; 273-275) What are degrees of freedom? How are the calculated? What do inferential statistics allow you to infer? What is the General Linear Model (GLM)? Why does it matter? Compare and contrast parametric and nonparametric statistics. Why and in what types of

Pretest and Posttest Self-Esteem Scores Before and After Psychological Counseling Participant Number Pretest Score Posttest Score 1 30 28 2 33 29 3 29 30 4 27 31 5 26 29 6 37 37 7 40 41 8 35 40 9 36 37 10 35 38 What is the mean for the pretest? What is the mean for the posttest? What is the value of t? What is the associated probability? Is the

Pick from at least two of the 16 research designs described in chapter nine of our textbook. Compare and contrast the outcomes that would be derived from each design. Your essay should strictly follow, citation, and style guidelines. Include a treatment of at least one scholarly article per design you choose that employs the particular design.

I really need to help!! Just 45-47!! Please help me Thank you . ustyou trayel each day to get tb work or y e travel time to work for workers in each state Louisiana Maine Maryland \\ Massachusetts ' Michigan Minnesota Mississippi Missouri Montana Nebraska - Nevada New Hampshire ' New Jersey New Mexico New York a North Carolina . North Dakota Ohio
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From farmers to civil engineers, there are many jobs in which the quadratic equation could be utilized. To complete the Discussion activity, please do the following: What is one possible field or profession you may be considering? What are ways the quadratic equation could be used in this chosen profession? Be very specific and include a practical

Two variables X and Y that have a quadratic relationship have a correlation close to 1. True False

2: Due date: Oct 20 Friday Let at N ID(0, 2 ) if not specified otherwise. 1. Let Xt be a stationary time series with mean and autocovariances k = = P10 Xt /5 0.8k and X t=6 (a) Find E(X). (b) Find Var(X). 2. Consider the process Zt = at + at1 + 0.25at2 , a2 = 20. (a) (b) (c) (d) (e) Identify the order of the ARIMA model for the process. Is {Zt }

According to a certainorganization, adults worked an average of 1,880 hours last year. Assume the population standard deviation is 43 hours and that a random sample of 50 adults was selected. Complete parts a through e below. a. Calculate the standard error of the mean. x= (Round to two decimal places asneeded.) b. What is the probability that the

21. What is a system of linear inequalities with an unbounded solution set., please use the information below In problems 22-25, find the corner points of the solution set of the given system and indicate whether the solution set is bounded or unbounded. 22. 2 x + 3 y 6 , x 0 , y 0 . 23. 3 x + 4 y 24 , x 2 , y 12 . 24. 3 x + y 27 , x + y 5 , x 0 ,

attachments_d7771691d4a42ec94fa30728c0eaeb96d973a9e3 Procedure_A Procedure_B 1 146 156 2 144 144 3 146 153 4 147 146 5 147 150 6 143 143 7 142 139 8 150 145 9 146 146 10 147 152 11 148 145 12 142 150 13 144 140 14 145 141 15 149 142 16 148 17 149 18 147 19 145 20 148 21 143 22 141 23 142 24 146 25 152 26 146 Page 1

You toss a coin nine times and observe 3 heads and 6 tails. This event is a: multiple outcome compound event multinomial sample point simple event

Use the models you got from part (a) to predict the y-values for x=seq(0,4,by=.5).Then, use the generated y-values to compute the MSE_testing for each of the five models.(Hint: use the predict() command to get the predicted y values for the x. Then, write your own function to compute the MSE How can I MSE_testing for each of the five models How

For the confidence interval (.621, .779) what is the margin of error?

Waiting times to receive food after placing an order at the local Subway sandwich shop follow an exponential distribution with a mean of 42 seconds. Calculate the probability a customer waits: a. Less than 26 seconds. (Round your answer to 4 decimal places.) Probability

independent samples and paired sample, which of these intervals can be constructed using one-sample intervals computations on the differences? A. paired samples B. both c. neither D. independent samples

The mean life of a particular brand of light bulb is 1200 hours. If you know that at about 95% of this brand of bulbs will last between 1100 and 1300 hours, then what is the standard deviation of the light bulbs life? a. 25 b. 50 c.200 d.100 e. 75

MALE AGE HT 1391 58 70.8 2129 22 66.2 2489 32 71.7 2490 31 68.7 2738 28 67.6 2988 46 69.2 2989 41 66.5 3346 56 67.2 3606 20 68.3 3607 54 65.6 3608 17 63.0 3610 73 68.3 3747 52 73.1 4832 25 67.6 4839 29 68.0 5599 17 71.0 5600 41 61.3 5601 52 76.2 6226 32 66.3 7190 20 69.7 7192 20 65.4 7194 29 70.0 9073 18 62.9 9074 26 68.5 10864 33 68.3 12349 55

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Information about the cause of death listed on a death certificate may be unreliable because

Imagine that you have replicated the Clark and Springer (2007) study with psychology students from an on-campus undergraduate program (all face-to-face classes). The faculty members are describing students they have in their psychology classes. You have organized responses from the 15 faculty who responded regarding in-class disruptions. Use the

Month 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Sales 242 235 232 178 184 140 145 152 110 130 152 206 263 238 247 193 193 149 157 161 122 130 167 230 282 255 265 205 210 160 166 174 126 148 173 235

A lab technician is tested for her consistency by taking multiple measurements of cholesterol levels from the same blood sample.The target accuracy is a variance in measurements of 1.2 or less.If the lab technician takes 16 measurements and the variance of the measurements in the sample is 2.2, does this provide enough evidence to reject the claim

The top 20% of all people in this group have cholestrol levels that make them "at-risk" for heart problems. Determine the raw-score cholesterol level which separates the at-risk people from the rest of the group.

Producing and Interpreting Descriptive Statistics - Ryder Systems, Inc. Producing and Interpreting Descriptive Statistics Ryder System, Inc. (R) Rachel Rich Capella University MBA-6018 Unit 1 Assignment 1 July 16, 2017 1 Producing and Interpreting Descriptive Statistics - Ryder Systems, Inc. 2 Producing and Interpreting Descriptive Statistics -

Find the value of z such that 0.01 of the area lies to the right of z . Round your answer to two decimal places.

How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20F to 45F. A random sample of prices ($) for sleeping bags in this temperature range is given below. Assume that the population of x values has an approximately normal distribution.60 110 75 35 90 55 30 23 100 110 105 95 105 60 110

Data Set for 13 Individuals Attendance at Church Total Understanding 37.00 15.00 35.00 30.00 31.00 4.00 35.00 10.00 32.00 1.00 32.00 30.00 33.00 8.00 33.00 8.00 32.00 7.00 31.00 6.00 30.00 5.00 33.00 7.00 25.00 3.00 Discussion Board Forum 2 Topic: Lab Project Phase 5 The final DB forum is the final phase of the 355 lab project, which gives you a

Three different beverages are sold at a fast food restaurant soft drinks, tea, and coffee. a. Explain why the type of beverage sold is an example of a categorical variable. b. Explain why the type of beverage sold is an example of a nominal scaled variable. c. Soft drinks are sold in three sizes at a fast-food restaurant small, medium, and large.

CA II-1 Confidence intervals - Solve problem #8.18 http://www.youtube.com/watch?v=h2uhzcOFS2s Watch the above video and solve the problem on a Microsoft Excel Please answer the question in a typed out response and please include excel output with graphs and charts CA II-2 Hypothesis testing - Z test - Solve problem #9.16,

In 1996, the General Social Survey (which uses a method similar to simple random sampling) asked, "On the whole, do you think it should be the government's responsibility to provide decent housing for those who can't afford it?" For this question, 240 people said that it definitely should out of 1572 randomly selected people. We will make a 90%

ID Salary Compa- Midpoint ratio Age Performance Service Gender Rating Raise Degree Gender Grade 1 Copy Employee Data set to this page. The ongoing question that the weekly assignments will focus on is: Are males and females p Note: to simplfy the analysis, we will assume that jobs within each grade comprise equal wor The column labels in the table

uiz Note: It is recommended that you save your response as you complete each question. Question 1 (1 point) You and your colleague are designing a study to try to determine the ideal mean cost for a discretionary service. You will market your service to a very large population. Your colleague thinks you will get the best data if you take lots of

Best-fit Line and Regression Line Predictions from Best-fit Lines By observing another set of data values, Tasha used a calculator for the tire diameter at the tread and circumference data and got an equation for the least-squares line: = 0.1 + 3.1x. Using this equation to predict circumference from diameter at the tread, the circumference for a

STAT 200 QUIZ 1 Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Determine whether the given value is a statistic or a parameter. 1) A sample of 120 employees of a company is selected, and the average age is found to be 37 years. A) Parameter B) Statistic

Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 131 millimeters, and a standard deviation of 8 millimeters. If a random sample of 50 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by more than 3 millimeters? Round your

Im not sure if I'm correct in my answers, please explain if they are wrong, thx lottery has 900 prizes of $1, 140 prizes of $10, 30 prizes of $65, 5 prizes of $290, 2 prizes of $1170, and 1 prize of $2700. Assume that 30,000 lottery tickets are issued and sold for $1. what is the lottery expected profit per ticket? i got 0.642 what is the lottery

Purdue Pete loves to have a presence on campus. Often, he is walking around campus. He looks to give and receive high fives from anyone. when he offers a high five, a random Purdue student will high five him back with probability 0.35. [If you are unfamiliar with a "high five" p|ease ask!) a] Purdue Pete sees a student near the Stewart Center and
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Use the t-distribution to find a confidence interval for a difference in means 1-2 given the relevant sample results. Give the best estimate for 1-2, the margin of error, and the confidence interval. Assume the results come from random samples from populations that are approximately normally distributed. A 90% confidence interval for 1-2 using the

How do I work through this problem step by step? I have access to R-studio Solid fats are more likely to raise blood cholesterol levels than liquid fats. Suppose a nutritionist analyzed the percentage of saturated fat for a sample of 6 brands of stick margarine (solid fat) and for a sample of 6 brands of liquid margarine and obtained the following

A film distribution manager calculates that 9% of the films released are flops. If the manager is correct, what is the probability that the proportion of flops in a sample of 701 released films would be greater than 7% ? Round your answer to four decimal places.

1. If a difference between random samples is not statistically significant, it is probably __________. On the other hand, a statistically significant difference is not necessarily ___________. a. important due to random chance b. unimportant large c. important unimportant d. unimportant important 2. To maximize the probability of rejecting the

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