For X ~ normal with u = 8, o = 12 and a sample size of 27, P(X < 7) =Note: round your z score to two decimals places0.4681.O 0.3336.O 0.5319.O 0.6664.none of the above answers are accurate because of a failed assumption.

Answered: Image /qna-images/answer/04739e8c-b4e9-495a-a3b9-810886124a27.jpg

Answered: For X - normal with u = 8, o = 12 and a…

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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Harper's Index reported that 80% of all supermarket prices end in the digit 9 or 5. Suppose you check a random sample of 112 items in a supermarket and find that 87 have prices that end in 9 or 5. Does this indicate that fewer than 80% of the prices in the store end in the digits 9 or 5? Use α = 0.05. 1. What is the value of the sample test statistic? (Round your answer to two decimal places.) 2. Find the P-value of the test statistic. (Round your answer to four decimal places.)
Use the following two-way ANOVA table Source A Error Total SS 2.25 0.95 1.20 2.1 6.5 df 13 16 23 MS 0.75 0.95 0.30 0.1313 4 What are the two degrees of freedom the researchers would use for the critical F value to test the interaction between factors A and B? Below the first number is the degrees of freedom of numerator and second value is the degrees of freedom of denominator. O a. 16, 23 O b.3, 23 O c. 3, 16 O d.3, 1 2 pc
#13). Please do the last one that’s missing an answer. The rest are correct.
Please provide a clear and complete solution. Answer quickly for I have 30 minutes left. Thank you.
Assume that you want to test the claim that the paired sample data come from a population for which the mean difference is µd = 0. x / 734 13 y / 99 8 7 13 Compute the value of the test statistic. (Round your answer to nearest hundredth. Hint: The correct test statistic is positive.)
2. Suppose that we are testing Ho following observed values of the test (a) Zo= 2.45 (b) Zo= -1.53 = po versus H₁>po. Calculate the p-value for the statistic: (c) Zo= 2.15 (e) Zo= -0.35 (d) Zo = 1.95
Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 4.6 parts/million (ppm). A researcher believes that the current ozone level is at an excess level. The mean of 14 samples is 4.9 ppm with a variance of 1.2 Does the data support the claim at the 0.01 level? Assume the population distribution is approximately normal. Step 2 of 5 : Find the value of the test statistic. Round your answer to three decimal places.
If the t-statistic for a single sample t-test is 1.58, what can you conclude? a. The test is significant at an alpha level of .05. b. The sample size of the test was at least 30. c. The sample mean was larger than the population mean. d. The population standard deviation was smaller than the difference between the sample mean and the population mean.
Below is the finishes question to the last question of the problem. Reject / fail to reject H0. At the 4% significance level, there is / is not enough evidence to support / reject the claim
QUESTION 12 In the video game Animal Crossing: New Horizons, you can catch and sell both fish and sea creatures. Alison learns that sea creatures sell for a mean of u = 3,345 bells with a standard deviation of o = 3,684 bells ("bells" is the currency in the game). Alison suspects that fish will sell for more money than sea creatures will, so she decides to conduct a hypothesis test at the a = 0.01 level with %3D %3D Họ: µ= 3,345 bells H1: p > 3,345 bells She finds a sample of 64 fish and computes their mean price to be 3,527 bells. a. Determine the standard error to the nearest thousandth. Ox = Work: b. Determine the z-score to the nearest hundredth. Z = Work: c. Identify the image below that best represents the standard normal curve you drew for this problem. A В C
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For X - normal with u = 8, o = 12 and a sample size of 27, P(X < 7) = Note: round your z score to two decimals places O 0.4681. 0.3336. O 0.5319. O 0.6664. none of the above answers are accurate because of a failed assumption.