From the data below;2Х13454уг861215a) Compute the mean square errorb) Compute the standard error of the estimatec) Compute the estimated standard deviation of bld) Use the t-test to test the following hypothesis (a .05)Ho B1 0Ha: Bl 0e) Use the F-test to test the hypotheses in part (d) at a 0.5 level of significance. Present inthe analysis of variance format

a) Computation of mean square error:Step-by-step procedure to obtain the mean square error using…

Answered: From the data below; 2 Х1 3 4 5 4 уг 8…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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5) A nutritionist claims that the mean tuna consumption by a person is 3.3 pounds per year. A sample of 60 people shows that the mean tuna consumption by a person is 3.2 pounds per year. Assume the population standard deviation is 1.17 pounds. At α=0.03, can you reject the claim? (a) Identify the null hypothesis and alternative hypothesis. A. H0: μ>3.2 Ha: μ≤3.2 B. H0: μ≤3.2 Ha: μ>3.2 C. H0: μ≠3.2 Ha: μ=3.2 D. H0: μ≤3.3 Ha: μ>3.3 E. H0: μ=3.3 Ha: μ≠3.3 F. H0: μ>3.3 Ha: μ≤3.3 (b) Identify the standardized test statistic. z= (Round to two decimal places as needed.) (c) Find the P-value. _____ (Round to three decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. A. Fail to reject H0. There is not sufficient evidence to reject the claim that mean tuna consumption is equal to 3.3 pounds. B. Reject H0. There is…
Executives of a supermarket chain are interested in the amount of time that customers spend in the stores during shopping trips. The executives hire a statistical consultant and ask her to determine the mean shopping time, µ, of customers at the supermarkets. The consultant will collect a random sample of shopping times at the supermarkets and use the mean of these shopping times to estimate u. Assuming that the standard deviation of the M population of shopping times at the supermarkets is 29 minutes, what is the minimum sample size she must collect in order for her to be 90% confident that her estimate is within s minutes of µ? Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements). (If necessary, consult a list of formulas.) ?
Please explain in de
A population has a mean of 100 and a standard deviation of 20. Find the z-score corresponding to each of the following sample means obtained from this population. a) M = 102 for a sample of n = 4 scores b) M = 102 for a sample of n = 100 scores
The brain volumes (cm 3) of brains have a mean of 1164.7 cm3 and a standard deviation of 127.3 use the given standard deviation and the tang rule of thumb to identify the limits separating values that are significantly low or significantly high. For such data, would a brain volume of 1369.3 cm 3 be significantly high? significantly low values are
A process that manufactures glass sheets is supposed to be calibrated so that the mean thickness μ of the sheets is more than 4 mm. The standard deviation of the sheet thicknesses is known to be well approximated by σ = 0.23 mm. Thicknesses of each sheet in a sample of sheets will be measured, and a test of the hypothesis H0 : μ ≤ 4 versus H1 : μ > 4 will be performed. Assume that, in fact, the true mean thickness is 4.04 mm. Section 06.07 Exercise 06.a a) If 100 sheets are sampled, what is the power of a test made at the 5% level? The power of a test made at the 5% level is _____. b) How many sheets must be sampled so that a 5% level test has power 0.95? ______ sheets must be sampled so that a 5% level test has power 0.95.c) If 100 sheets are sampled, at what level must the test be made so that the power is 0.90? The test must be made at _____% level so that the power is 0.90. d) If 100 sheets are sampled and the rejection region is X¯ ≥ 4.02, what is the power of the test?…
Suppose that a group of researchers is planning to test a new weight loss supplement. They have selected a random sample of 50 people who are trying to lose weight and plan to measure the amount of weight lost after one month of using the supplement. Assume that the researchers know from prior experiments that the standard deviation of weight lost in one month, o, is 1.5 lb. To show that the supplement is effective, they plan to use a one-sample z-test of Ho: =0 lb against H1: µ > 0 lb, where u is the mean amount of weight lost in one month. They have also determined that, for a test with a significance level of 0.01, the power of the test is 0.8348 if the mean amount of weight lost is actually 0.7 lb. What is the probability that the researchers will reject their null hypothesis if the mean amount of weight lost is 0.7 lb or more? Give your answer as a percentage, precise to two decimal places.
A process that manufactures glass sheets is supposed to be calibrated so that the mean thickness μ of the sheets is more than 4 mm. The standard deviation of the sheet thicknesses is known to be well approximated by σ = 0.23 mm. Thicknesses of each sheet in a sample of sheets will be measured, and a test of the hypothesis H0 : μ ≤ 4 versus H1 : μ > 4 will be performed. Assume that, in fact, the true mean thickness is 4.04 mm. Section 06.07 Exercise 06.a a) If 100 sheets are sampled, what is the power of a test made at the 5% level? The power of a test made at the 5% level is _____. b) How many sheets must be sampled so that a 5% level test has power 0.95? ______ sheets must be sampled so that a 5% level test has power 0.95.c) If 100 sheets are sampled, at what level must the test be made so that the power is 0.90? The test must be made at _____% level so that the power is 0.90. d) If 100 sheets are sampled and the rejection region is X¯ ≥ 4.02, what is the power of the test?…
In conducting a test on the hypotheses Ho: μ = 50 and Ha: μ > 50, you find that the population mean is 55 when it is actually 50. This results in what type of error? O No error ○ Type I error ○ Type II error Standard deviation of the mean O There is not enough information given
A process that manufactures glass sheets is supposed to be calibrated so that the mean thickness μ of the sheets is more than 4 mm. The standard deviation of the sheet thicknesses is known to be well approximated by σ = 0.23 mm. Thicknesses of each sheet in a sample of sheets will be measured, and a test of the hypothesis H0 : μ ≤ 4 versus H1 : μ > 4 will be performed. Assume that, in fact, the true mean thickness is 4.04 mm. Section 06.07 Exercise 06.a a) If 100 sheets are sampled, what is the power of a test made at the 5% level? The power of a test made at the 5% level is _____. b) How many sheets must be sampled so that a 5% level test has power 0.95? ______ sheets must be sampled so that a 5% level test has power 0.95.c) If 100 sheets are sampled, at what level must the test be made so that the power is 0.90? The test must be made at _____% level so that the power is 0.90. d) If 100 sheets are sampled and the rejection region is X¯ ≥ 4.02, what is the power of the test?…
A variable z is normally distributed with mean 21 and standard deviation 3. Round your answers to the nearest hundredth as needed. a) Determine the z-score for z = 24. 2 3= b) Determine the z-score for z = 18. c) What value of z has a z-score of 2.67 d) What value of z has a z-score of -0.77 e) What value of r has a z-score of 07 o search

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