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Mathematics Questions and Answers August 07, 2022

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A cheese processing company wants to estimate the mean cholesterol content of all?one-ounce servings of a type of cheese. The estimate must be within 0.83 milligram of the population mean. ?(a) Determine the minimum sample size required to construct a 95?% confidence interval for the population mean. Assume the population standard deviation is
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What is the level mismeasurement for Independent Sample T-Test

Suponga que una aplicacin especfica usa una llave de 12 bits y el tiempo que toma evaluar una llave es 500 ms. Cunto tiempo tomara hacer una exploracin exhaustiva de todas las llaves posibles? Nota: 1 seg = 1000 ms. 1 punto 2048 seg. 1024 seg. 512seg

Six different alternatives have been proposed for improving the water supply for a city, but only one option can be implemented. Each option has a lifetime of 8 years and the MARR set is 5%. All figures are in millions of dollars. Which alternative should be selected?

2 how can submative assessment be used for mathematics

Construct 90%, 95%, and 99% confidence intervals to estimate from the following data. State the point estimate. Assume the data come from a normally distributed population. 13.2 11.6 11.9 12.1 12.5 11.4 12.0 11.7 11.8 13.2

During a laboratory experiment, the average number of radioactive particles passing through a counter in 1 millisecond is 4. What is the probability that: i) Exactly 6 particles enter the counter in a given millisecond. ii) At most 3 particles enter the counter during an interval of 2 millisecond.

If the standard deviation for a set of data is0, which of the following must betrue? A. All of the data values are identical. B. All of the data values are negative. C. All the data values equal 0. D. None of the above must be true since standard deviation cannot be equal to 0. Find the variance for the given sample data. Round your answer to one

given that some normally distributed data has a mean of 821.812 and a standard deviation of 138.158. What is the probability that a randomly sampled datapoint will be less than 678.904? I am getting the answer .152

Researchers built a model to explore the relationship between a possum's total body length (in cm) and their skull width (in mm). They collected data from 104 possums in Australia and New Guinea. Researchers built a model to explore the relationship between a possum's total body length (in cm) and their skull width (in mm). They collected data

MODULE INFERENCE FOR RELATIONSHIPS CONTINUED INFERENCE FOR RELATIONSHIPS CHECKPOINT Step 1 of 1 The following questions present you with a scenario, and you need to choose the most appropriate statistical test in each case. Question 1 of 8Points: 10 At the beginning of the semester, students who registered for a statistics course were randomly

the question is as below 15. Let 5 be a random variable with continuous distribution function F. Find the distribution function of the random variable F (g)
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Can someone give me some guidance with this problem? \f\f
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Given the functiong(n)=(n6)(n+3)(n7) its g -intercept is its n -intercepts are

STMG 608 recomendara integracin vertical o no integracin vertical? Explique

0 out of 2 points Which of the following statements is true? Answers: The TFR is the difference between Birth Rates and Death Rates divided by 1000 The Total Fertility Rate (TFR) is a measure of the fertility of an average group of women moving through thier childbearig years The TFR is another name for Rate of Natural Increase The TFR is another

Using the data below for the 5 decisions A through E, use sensitivity analysis to determine the final two decisions with the highest expected values and determine their expected value (EV) where we are indifferent to those two decisions. Decisions High Low Able 12 5 Best 7 8 Capable 20 10 Deceiving - 10 12 Extreme 15 15

Testing the difference in two population proportions is useful whenever the researcher is interested in comparing the proportion of one population that has certain characteristic with the proportion of the second population that has the same characteristic. Is it a true or false statement?

Need help understanding. I thought the answer was 0.404 \f
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The Auto Survey data set. The data set contains survey information gathered from a few customers. MPG is the dependent variable. Type, Purchased, Vehicle Age and Mileage are independent variables. Tt is required to construct multiple linear regression model and correlation matrix for this dataset to answer questions. For the Auto Survey data set,
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In a bingo game, balls numbered 1 to 75 are in a bin. Balls are randomly drawn and not replaced. Find the probability of the first five balls drawn: P(5 even numbers or 5 numbers less than 30) (the answer is ~0.032)

Of all the companies on the New York Stock Exchange, profits are normally distributed with a mean of $6.54 million and a standard deviation of $10.45 million. In a random sample of 73 companies from the NYSE, what is the probability that the mean profit for the sample was between -2.9 million and 4.5 million?

Kindly solve the question Suppose a certain type of small data processing firm is so specialized that some have difficulty making a profit in their first year of operation. The probability density function that characterizes the proportion Y that make a profit is given by 1(y) = [ky' (1 - y). OSys1, elsewhere. (a) What is the value of k that
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What would be the best name for the experimental design for this experiment on the effects of feral predator management on native mammal populations? The aim of the experiment is to investigate whether baiting for feral predators and olfactory deterrents will increase native mammal populations. Twenty locations are chosen at random within a large

Wind flowing over a lake moves faster than wind flowing over land. When wind reaches the downwind side of a lake it experiences: Divergence and subsidence Convergence and subsidence Divergence and uplift Convergence and uplift

We sampled 40 NY teachers for their annual income. In our sample, the average annual income is $60,000 and the standard deviation of annual incomes is $7,500. Based on that sample, we want to predict the mean annual income u of all the NY teachers with the confidence level of 0.99 (99 percent). Part a) What is the error bound/margin E in our

(a) Sketch a picture of a surface S with positive curvature. (b) Sketch a picture of a surface S with negative curvature.

can you help me describe this box plot and compare the two data sets Box Plot of Total Sleep for Herbivores and Omnivores Total Sleep (hrs) 15 - vore 10- herbi omni 5 - herbi omni Vore
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Please answer 5. The following table gives mortality statistics for a fictitious county in a rural state for a period of July 1st to June 30th (1 year). After reviewing the health status indicators and mortality data, calculate the following mortality rates (be sure to present as a rate!): a. Crude mortality rate b. Age-specific mortality rate for
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31. This statistical test is used to control extraneous variables statistically. This approach can be easily valuable in certain research situations, such when a non-equivalent control group design is used. A. ANOVA B. ANCOVA C. T-test D. chi-square

(Inverse Functions) The cost, in millions of dollars, to remove x% of a pollutant from a lake can be 36x 100-x interpretation. Note that values are rounded to 2 decimal places where necessary. approximated by the function C = f(x) = . Determine the value of f~'(24) and give a practical (A) f7'(24)=40. The cost to remove 24% of the pollutant is $40
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There is no one-to-one correspondence between the set of all positive integers and the set of all odd positive integers because the second set is a proper subset of the first. Is this a true or false statement?

What is the average body temperature?Most people say it is 98.6 F.Some now claim that it is significantly less than 98.6F.The task in this exercise is to conduct a hypothesis test about this claim. Here is a mean set of 30 adult body temperatures. 98.6 98.6 98.0 98.0 99.0 98.4 98.4 98.4 98.4 98.6 98.6 98.8 98.6 97.0 97.0 98.8 97.6 97.7 98.8 98.0

1000 people survey. 300 adults indicated that they were obese, 100 had heart disease. Of the 700 adults who indicated that they were not obese, 100 had heart disease. You will need to set up a 2x2 to help you calculate the following 1. What percent of obese subjects had heart disease? (percent, one decimal place)

The sales S (in thousands of units) of seasonal product are given by the model S = 73.36 + 45.74 sin(pi t /6) where t is the time in months, with t =1 corresponding to January. Find the average sales for the first quarter (0 t 3). Round answer to three decimal places.

What real-world brand choice problem for Tesla could be solved using brand choice modeling? (not including use of chi-square analysis) What type of data would you need to solve this problem?How many variables?What level of measurement is best for these variables? Would you use log-linear, logit, or logistic regression to solve this problem? Why is

How can the Bureau of Economic Analysis' monthly figures be annualized for GDP estimation? Group of answer choices By adding up all months' figures By dividing by twelve By multiplying the quarterly numbers by four By averaging the figures over a year

The degree of association between two variables, over and above the influence of one or more other variables, is Group of answer choices Path analysis. Reliability. Partial correlation. Factor analysis

Storage and organization for LEGOs can be done by color. The table below shows the number of LEGO pieces by color for a child's collection of 1,120 pieces. Color Number of Pieces Grey/Black 325 White/Cream 216 Red 107 Orange 82 Yellow 95 Green 125 Blue 66 Purple 58 Pink 46 What is the relative frequency for the orange pieces? Question 15 options:

Calculate the sample standard deviation and variance and for the following data set using either method. 3.04 2.65 4.56 1.33 6.08

Realic una observacin de clase en un lugar de cuidado de nios en el hogar, con nios de edades entre 4 y 6 anos de edades esta y debo explicar porque, que y como realizar evaluaciones de los procesos y productos creativos de los nios. Cabe destacar que en esta observacin los nios estaban explorando una flor de girasol aprendiendo sobre sus partes y

Culturally responsive mathematics instruction is for all students. Select the strategy that does not support the specific needs of linguistically and culturally diverse students. Explicitly teach vocabulary. Make content relevant. Ensure shared power. O Teach each math concept independent of the last topic covered

Problem #3 (15 points) - An Interesting Coin Game Suppose that two people A and B are playing a game with a single coin which has probability p of coming up heads and q = 1 p of coming up tails. The game begins with A flipping the coin and then B flipping the coin and then A flipping the coin and then B flipping, and so on, until the coin comes up

the probability that a patient recovers from a rare blood disease is 0.4. if 20 people are known to have contracted this disease, what is the probability that a) at least 10 survive b) from 3 to 8 survive c) exactly 15 did not survive d) how many patients are expected to survive the disease ?

A new drug has been developed for treatment of a certain disease. A group of 500 patients suffering from the disease were treated with the new drug. Another group of 500 patients were treated with an alternative drug. At the end of two weeks, 360 of the patients receiving the new drug recovered, while 220 of those taking the alternative drug

A consumer advocate is interested in evaluating the claim that a new granola cereal contains 4 ounces of cashews in every bag. The advocate recognizes that amounts of cashews will vary slightly from bag to bag, but she suspects that the mean amount of cashews per bag is less than 4 ounces. To check the claim, the advocate purchases a random sample

statistics 4-31. Three events occur with probabilities P(E ) = 0.35, P(E,) = 0.15. P(E,) = 0.40. If the event B occurs, the probability becomes P(E, IB) = 0.25, P(B) = 0.30 a. Calculate P(E, and B) b. Compute P(E, or B) C. Assume that E, . E,, and E; are independent events. Calculate P(E, and E, and E.)
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It's a busy day and your associates are having trouble with the unexpectedly high workload

Evaluate the following limits. A. lim x-->2 (sqrt(x 2 +12)-4)/ x-2 B. lim x-->0 sin(3x)/ sin (7x) C. lim x-->0 x 2 cos 1/x

Help solve Researchers wondered if the average water temperature of streams without tailed frogs was different than the average water temperature of streams with tailed frogs, which is known to be 12.2 degrees Celsius. A survey of 31 streams without tailed frogs was taken and the water temperature was recorded for each stream. Which of the
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The relationship of Y to four other variables was established as Y = 12 + 3X1 - 5X2 + 7X3 + 2X4. When X1 increases 5 units and X2 increases 3 units, while X3 and X4 remain unchanged, what change would you expect in your estimate of Y? a) Increase by 15 b) We should never manipulate more than one independent variable in a multiple regression model

Suppose 5 students have the following scores, given as quiz 1 score, quiz 2 score: Student 1:10, 10 Student 2:9, 8 Student 3:6, 8 Student 4:5, 9 Student 5:8, 9 The regression analysis shows r = .76. The equation of the best fitting regression line is y = 4 + .5xwhere x = quiz 1 score (in points) and y = quiz 2 score (in points).Which student has

A simple random sample of size n equals 250 n=250 individuals who are currently employed is asked if they work at home at least once per week. Of the 250 employed individualssurveyed, 41 responded that they did work at home at least once per week. Construct a99% confidence interval for the population proportion of employed individuals who work at

6 The figure shows the dimensions of a compost bin. Can the expression Base below be used to find the surface area of the compost bin? Explain. 5 ft Include a net in your explanation. 6 . 5+ 4 . 5+ 3.5+5.5+2 3.4+3(3-4) Z 3 ft se : 5.4= 20 No, The expire 6 ft 5: 3: 15 cannot be usedto 5 ft find the burdock 4 ft 6.5=30
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The population of a small town is 19,280 and growing at 4% annually.The local paper wants to predict the population 10 years from now.They will assume the rate of growth stays the same and they know that population can be modeled using the same formula as compound interest.They are free to choose a compounding frequency.They choose the one that

4. Weekly sales for watermelons over the summer at a local produce stand exhibit a linear trend. The demand for weeks 1 through 8 was 61, 62, 60, 66, 72, 69, 78, and 84. (a) Calculate the forecasts for weeks 2 through 8 using Holt's double exponential smoothing with a: 0.20 and B: 0.1. (Initialize with L1=61 and T1=1.) (b) What is the
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When a marketing manager surveys a few of the customers for the purpose of drawing a conclusion about the entire list of customers, she is applying: lytics inferential statistics. quantitative models. numerical measures. descriptive statistics

I How to interpret findings in terms of Statistical analysis? Interpretation for the prospect of p-value, z-score, null-hypothesis ?Conclusions made from the data and statistics reported. Findings: The number of clusters per group was 20, with 463 mothers in the intervention group and 440 in the control group. At 6 months, 97 (23%) of 418 and 211

Here is my formula for this week post. I am using my age 40 *10= 400mg adult dosage. Using my child age 11 *400mg = 4,400 mg and my child age 11+12 = 23. 4,400 divided by 23 = 191.304348 as the child dosage, which ended by being 191mg for child dosage

In order to estimate the difference between the average hourly wages of employees of two branches of a department store, the following data have been gathered. Downtown store North Mall Store Sample size 25 20 sample mean $9 $8 Sample standard deviation $2 $1 A 95% interval estimate for the difference between the two population means is? I'm

Explain what calculates function was used to sowe this problem !! ! (I have a ti- 83 plus . Please explain for this calculator) 55, 41, 51, 58, 49, 50, 53, 63, 74, 59, 46, 57, 60, 60 We, 62 1 59, 55, 47, 57, 63, 55, 49, 62, 41, 43, 57, 41, 54, 54

A 91% confidence interval for the proportion of people that believe in Bigfoot has been calculated as (0.3284 , 0.3496). a. Determine a point estimate for the proportion of people that believe in Bigfoot. b. Determine the margin of error for this interval.

In determining automobile mileage ratings, it was found that the mpg (X) for certain model is normally distributed, with a mean of 31 mpg and standard deviation of 1.8 mpg. Find P(X <30).

In a certain population of hospital patients, the probability is 0.35 that a randomly selected patient will have heart disease. The probability is 0.86 that a patient with heart disease is a smoker. Two patients are randomly selected from the population. What is the probability that at-least one patient will be a smoker with heart disease?

Given that some normally distributed data has a mean of 864.72 and a standard deviation of 91.94. What is the upper endpoint of the interval that is centered on the mean and included 68% of the all data?

Hi can you help me with my back to uni homework! 3. Identify the error term in the exponential forecasting equation and re-express , in The following table and graph detail the mean price of a stock for the last 16 weeks: terms of the error term, o and A. 4. State values that of can take and explain the effect that varying of has on the forecast.
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The British Department of Transportation studied to see if people avoid driving on Friday the 13 th .They did a traffic count on a Friday and then again on a Friday the 13 th at the same two locations ("Friday the 13th," 2013).The data for each location on the two different dates is in table #9.2.6.Estimate the mean difference in traffic count
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A company claims that the time their customers spend waiting in line for service is normally distributed with a mean of21.4 minutes and a standard deviation of7.2 minutes. Approximately10% of the customers can expect to wait as long as how many minutes for service? A28.6 B30.6 C38.6 D33.3 E21.4

Question1 Explain why the frequency bar graph and the relative frequency bar graph for a data set have a similar appearance.Suppose you are asked to collect some information about students in Math 10 for a statistics project. I. Give an example of a qualitative variable you might collect that is nominal and not ordinal. Il. Give an example of a
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For the binomial GLM in R: A possible link function is the identity The default link function tends to its extreme values faster than the cauchit link function A possible link function is the probit The default link function is the logistic A possible link function is the logistic Link functions need to restrict the dependent variable to being

1.For a random sample of size 10, we have calculated a standard deviation ofs=4. Which ofthe following facts is true? The variance is 16. The variance is 2. The variance is 4. The standard deviation calculation is incorrect. 2.A lumber yard has scrap wood for sale. One employee recorded the measurementsfor the lengths of 55 different wood boards.

Use the Divergence Theorem to compute the net outward flux of the following field across the given surface S. F = ( -4y2 + x, -x2 + 4y,by2+ 32) S is the sphere {(x,y,z): x2 + y2 + z2 = 4}. . . . The net outward flux across the surface is (Type an exact answer, using it as needed.)
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State your function . Set up and solve a definite integral to find the exact area of the region bounded by the graph of , the -axis, and the vertical lines and . Find the approximate area of the region bounded by the graph of , the -axis, and the vertical lines and using a lower sum and two (2) rectangles. Discuss the results of the two areas you

Consider the parabola given by the equation:f(x)=4x^2+14x+3 Find the following for this parabola: A) The vertex: B) The vertical intercept is the point C) Find the coordinates of the two x x intercepts of the parabola and write them as a list, separated by commas:

to take indefinite integrals do I tak the integral of the whole function and then plug in the bounds

The table shows the results of a survey that asked adults whether they subscribe to a video streaming service. Age group Yes No 18-29 609 120 30-49 444 229 50-64 200 698 65 and over 106 654 Find the probability that an adult in each age group subscribes to a video streaming service. 18-29= % 30-49= % 50-64 = % 65 and over = %

\frac{1-\cos \left(2x ight)}{2}*\frac{1+\cos \left(2x ight)}{2}

Tengo muchos planes interesantes para este fin de semana. Todas mis clases este semestre son maravillosas (wonderful). Me gusta toda la comida de la cafetera. Hay muchas noticias buenas ltimamente (lately). Siempre estudio en la biblioteca

Find the payment necessary to amortize the following loan. $7900; 8.6% compoundedsemiannually; 24 semiannual payments The payment is $ ( )

Question 11 1 pts A consultant believes that the average amount spent by customers at an online book store will be more than the current $100 if they add a new faster shipping service. To test the null hypothesis that the population mean = $100 versus the alternative hypothesis that the population mean > $100, the consultant conducts a study using
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a. A certain type of new business succeeds 60% of the time. Assume that 6 suchbusinesses have opened (where they do not compete with each other, so it is reasonable to believe that their relative successes would be independent) i. What is the probability that all 6 businesses will succeed? ii. What is the probability that at least 2 businesses

Molly earned a score of 940 on a national achievement test. The mean test score was 850 with a standard deviation of 100. What proportion of students had a higher score than Molly?

Historical data suggests that a scientific journal accepts 10% of the manuscripts it receives, rejects 50% of the manuscripts it receives, and requests \"revise and resubmit\" for the remaining manuscripts. In a given month, the journal receives 75 manuscripts. (@) What is the probability that 5 are accepted and 40 are rejected? (b) What is the
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one of the town council members believes that the two fire stations have different mean response times. use a significance level of 0.05 and the p-value to make decision. northern: 2,2,2,2,4,4,4,4,4,5,5,5,5,5,5,6,7,7,8,8,8,8,8,9,9,10,10,10,10,12 sum= 188sum of standard deviations= 227.8.southern:

Claire can set aside $600 into her investment account every month to save up for a house that will cost $200,000. If this account earns 10.5% and she makes deposits for 17 years (NPER), how much will be in the account when Claire buys the house? Will she have enough? Group of answer choices $25,483.28. NO, not enough! $56,975.66. NO, not enough!

Every year, the last season's baseball rookie of the year seems to fail to live up to expectations for his sophomore season. What might explain this phenomenon? A.overestimation of effect size B.standard error of the estimation C.regression to the mean D.proportionate reduction in error

For a repeated-measures design, df = n1+ n2- 2 for the t statistic.

Can I get answer to this statistic problem in the picture. 8. Refer to the sample data for a polygraph test experiment shown below. Round your answer to one decimal place. Did Not Lie (DNL) Did Lie (DL) Positive Test Result 11 False Positive 35 True Positive ( + ) (FP) (TP) Negative Test Result 50 True Negative 23 False Negative (-) (TN) (FN) (O
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Find the total monthly payment, including taxes and insurance. Annual Mortgage Interest Rate Term of Loan Annual Taxes Insurance $59,900 5% 10 years $609 $396 The total monthly payment is $ (Round to the nearest cent as needed.)
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Part A (Items #1 and #12 are required but not graded) You will submit one file, a Word document. Please limit each response to 250 words or less. Name the file in the following format: lastnamefirstinitialBTM8107-1.doc (example: smithbBTM8107-1.doc). Briefly describe your area of research interest (1-3 sentences is sufficient). List 4 variables

Identify your measures. Recall that "measures" are quantifiable indicators, or proxies

5. The Company collected a sample of the salaries of its employees. There are 70 salary data points summarized in the frequency distribution below: Number of Employees 5,001 10,000 10,001- 15,000 15,001-20,000 20,001-25,000 25,001-30,000 (5,001+10,000)/2 = 7,500.5 (10,001+15,000)/ 2 = 12,500.5(15,001+20,000)/ 2 = 17,5005 (20,001+25,000)/ 2 =
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please solve and show all formulas used. 4. Calculate the allowable axial compressive load for a W12 x 40 structural steel column having a 12-in-by % in steel plate bolted to each flange. The unbraced length is 30 feet. The ends are pin-connected. Use Fy=36 Ksi. [30 Points] PL = 12 X W/ 12 X 4O X- X 30 A PL - 12 x5 section A - A
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It is commonly believed that Wall Street security managers earn an average of $100,000 in bonus each year.At the 5% significance level, test the claim that Wall Street security managers do not earn an average of $100,000 in bonus each year. Twenty managers were surveyed to ask how much bonus they earned this year.To maintain anonymity, only the

The average amount of rainfall during the summer months for the northeast part of the United States is 11.52 inches. A researcher selects a random sample of 10 cities in the northeast and finds that the average amount to rainfall for 2015 was 7.42 inches. The standard deviation of the sample is 1.3 inches. At, can it be concluded that for 2015 the

The average wait time to get seated at a popular restaurant in the city on a Friday night is 15 minutes.Is the mean wait time greater for men who wear a tie? Wait times for 16 randomly selected men who were wearing a tie are shown below. Assume that the distribution of the population is normal. 13, 17, 17, 14, 13, 17, 16, 14, 15, 14, 13, 15, 15,

Brian Vanecek, VP of Operations at Portland Trust Bank, is evaluating the service level provided to walk-in customers. Accordingly, his staff recorded the waiting times for 64 randomly selected walk-in customers and determined that their mean waiting time was 15 minutes. Assume that the population standard deviation is 4 minutes. The 90%

A chair listed at $61.13 is purchased at a 7% discount. Upon purchase, 8.17% tax was added to the purchase price. What was the price after tax

35 Select the correct answer. Which option matches the integral J_2 (2x2 + 3) dac ? O A. So2 (2x2 + 3) dx O B. So (2x2 + 3) dx Oc. O O D. 2fo (2x2 + 3) dx
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look for evidence that larger amounts of the suspected cause produce larger or smaller amounts of the effect

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