The dimensions of Noah's ark according to the Bible had a length of 300 cubits, a...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
The dimensions of Noah's ark according to the Bible had a length of 300 cubits, a breadth of 50 cubits, and a height of 30 cubits. While these values are believed to be exact, the size of a cubit varies anywhere between 457mm and 531mm in ancient cultures. Supposing that to the nearest millimetre a cubit is 495mm, find the volume of Noah's ark in cubic metres to the appropriate number of significant figures. Question 2 [1+2+2+2+2+1 = 10 marks] The following marks were obtained by the 11 students enrolled last semester in the unit "Essential Life Skills": 75, 99, 44, 80, 62, 87, 93, 72, 57, 90, 86. (a) For statistical questions pertaining to this particular class, is this population or sample data? (b) Find the mean mark obtained by the class. (e) Find the standard deviation for the marks data. (d) Draw an appropriate stem and leaf display for this data. (e) What is the median mark? (f) Is the data symmetrically distributed? If not, comment on the shape of the distribution. Question 3 [(2+2+1+1)+(2+3)= 11 marks] A research team is working hard to understand coronavirus (COVID-19) to better fight it. (a) The team is interested in knowing if there is a seasonal factor contributing to the contraction of the virus. They access and randomly select the data from 350 people around the world and determine in what season they contracted the virus. i) State appropriate null and alternate hypotheses that the team would use in an attempt to get statistical evidence that there are seasonal variations to catching the virus. ii) The seasons in which patients contracted the virus was as follows: Autumn Winter Spring Summer 96 69 80 105 Determine the value of the x2 test statistic. iii) Given that the Excel command -CHIINV (0.05,3) returns the value of 7.8147, at the a=0.05 level of significance, determine if the null hypothesis is rejected or not. iv) State what conclusion can be made from this hypothesis test. (b) The team has found that the recovery time from the COVID-19 virus is normally distributed with a mean of 17 days and a standard deviation of 8 days. i) Given that the Excel command -NORMDIST (21,17,8,TRUE) returns the value 0.691, what percentage of virus victims take more than 21 days to recover? ii) What percentage those infected by the virus take between 9 and 21 days to recover? The dimensions of Noah's ark according to the Bible had a length of 300 cubits, a breadth of 50 cubits, and a height of 30 cubits. While these values are believed to be exact, the size of a cubit varies anywhere between 457mm and 531mm in ancient cultures. Supposing that to the nearest millimetre a cubit is 495mm, find the volume of Noah's ark in cubic metres to the appropriate number of significant figures. Question 2 [1+2+2+2+2+1 = 10 marks] The following marks were obtained by the 11 students enrolled last semester in the unit "Essential Life Skills": 75, 99, 44, 80, 62, 87, 93, 72, 57, 90, 86. (a) For statistical questions pertaining to this particular class, is this population or sample data? (b) Find the mean mark obtained by the class. (e) Find the standard deviation for the marks data. (d) Draw an appropriate stem and leaf display for this data. (e) What is the median mark? (f) Is the data symmetrically distributed? If not, comment on the shape of the distribution. Question 3 [(2+2+1+1)+(2+3)= 11 marks] A research team is working hard to understand coronavirus (COVID-19) to better fight it. (a) The team is interested in knowing if there is a seasonal factor contributing to the contraction of the virus. They access and randomly select the data from 350 people around the world and determine in what season they contracted the virus. i) State appropriate null and alternate hypotheses that the team would use in an attempt to get statistical evidence that there are seasonal variations to catching the virus. ii) The seasons in which patients contracted the virus was as follows: Autumn Winter Spring Summer 96 69 80 105 Determine the value of the x2 test statistic. iii) Given that the Excel command -CHIINV (0.05,3) returns the value of 7.8147, at the a=0.05 level of significance, determine if the null hypothesis is rejected or not. iv) State what conclusion can be made from this hypothesis test. (b) The team has found that the recovery time from the COVID-19 virus is normally distributed with a mean of 17 days and a standard deviation of 8 days. i) Given that the Excel command -NORMDIST (21,17,8,TRUE) returns the value 0.691, what percentage of virus victims take more than 21 days to recover? ii) What percentage those infected by the virus take between 9 and 21 days to recover?
Expert Answer:
Related Book For
Posted Date:
Students also viewed these mathematics questions
-
Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...
-
"internet radios" for streaming audio, and personal video recorders and players. Describe design and evaluation processes that could be used by a start-up company to improve the usability of such...
-
Since perpetuity payments continue forever, how can a present value be computed? Why isnt the present value infinite?
-
Recording long-term credit transactions sounds simple enough- record the debt, and expense the interest. Yet this is not always the case. Consider the Institute of Chartered Accountants of Ontario...
-
Refer to the data in Exercise 11-15 on oxygen demand. Find a 99% confidence interval on each of the following: (a) β 1 (b) β 0 (c) Find a 95% confidence interval on mean BOD...
-
Refer to the information in Problem 21-1B. Tohono Companys actual income statement for 2017 follows. Required 1. Prepare a flexible budget performance report for 2017. Analysis Component 2. Analyze...
-
JOB ORDER COSTING TRANSACTIONS B & L Enterprises makes garage doors. During the month of February, the company had four job orders: 303, 304, 305, and 306. Overhead was applied at predetermined...
-
what are the " Data Types" in the relational model ? List the differences between "Domain and TYPE". (answer in 500 words atleast)
-
Suppose myArray is an array with five elements of type int. What is stored in myArray after the following Java code executes? 1 int r=0, i=0, a=23432; 2 int[] myArray = new int [5]; ~ 3 4 in N89 4...
-
Suppose that the 1.3-km main span of steel for the Golden Gate Bridge had no expansion joints. Part A Find the change in length of the bridge for an increase in temperature of 18 C. Assume that for...
-
Assume the CAPM holds. Let the risk-free interest rate be 0.04 and let the expected return of a market portfolio be equal to 0.08. Suppose that stock X has X = 2 and that stock Y has Y = 0.8. Using...
-
Robin Accounting took out a $2,425,000 interest-free bank loan on January 1, 2022. Payment will be made over fou equal annual installments every January 1. Calculate the current and long-term...
-
Please thoroughly explain the units below and their functions City Wide Camera Watch Canine Patrol Criminal Gangs
-
In what way should the present tax system be reformed? How could this reform happen and what would be the effect on governmental structure? How would the reform affect any publicly run services and...
-
The lamp is protected by depositing indium-tin-oxide (BaTiO3) as a cover on all parts except beryllium window. The mass absorption coefficient of barium, titanium, and oxygen for Cu-Kai radiation are...
-
1. True or False. Pitfalls to consider in a statistical test include nonrandom samples, small sample size, and lack of causal links. 2. Because 25 percent of the students in my morning statistics...
-
A cherry bomb explodes into three pieces of equal mass. One piece has an initial velocity of 10 m/s x-bar. Another piece has an initial velocity of 6.0 m/s x-bar 3.0 m/s y-bar. What is the velocity...
-
Suppose two black holes meet and coalesce into one larger black hole. If they each have the same mass M and Schwarzschild radius R, (a) Express the single black holes Schwarzschild radius as a...
-
A uniform 2.0-kg cylinder of radius 0.15 m is suspended by two strings wrapped around it (Fig. 8.50). As the cylinder descends, the strings unwind from it. What is the acceleration of the center of...
-
In Problem 102, using an interest rate of 10 percent, what uniform series over the closed interval [1,8] is equivalent to the cash flow profile shown? Data from problem 102 Consider the following...
-
In Problem 102, using an interest rate of 8 percent, what single sum of money occurring at the end of year 8 is equivalent to the cash flow profile shown? Data from problem 102 Consider the following...
-
Consider the following cash flow profile: With a compounded annual interest rate of 6 percent, what single sum of money at the end of the sixth year will be equivalent to the cash flow series? EOY...
Study smarter with the SolutionInn App