A random sample of size n = 36 is taken from a population with mean μ = -6.8 and standard deviation o= 3.a. Calculate the expected value and the standard error for the sampling distribution of the sample mean. (Negative values should beindicated by a minus sign. Round "expected value" to 1 decimal place and "standard error" to 4 decimal places.)Expected valueStandard errorb. What is the probability that the sample mean is less than −7? (Round final answer to 4 decimal places.)Probability:c. What is the probability that the sample mean falls between -7 and -6? (Round final answer to 4 decimal places.)Probability:

The sample size is 36, population mean is -6.8 and population standard deviation is 3. That is,…

Answered: A random sample of size n = 36 is taken…

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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34% of CSU students participate in the Statistics Games while they attend CSU. You take a random sample of 40 students. You want to determine the probability that more than 15 of them have participated in the Statistics games. Since the conditions are met, you decide to use the Normal model to find your answer. What is the mean and standard deviation of the sampling distribution?
esc Introduction A chain of restaurants has historically had a mean wait time of 9 minutes for its customers. Recently, the restaurant added several very popular dishes back to their menu. Due to this, the manager suspects the wait time, μ, has increased. He takes a random sample of 44 customers. The mean wait time for the sample is 9.6 minutes. Assume the population standard deviation for the wait times is known to be 3.3 minutes. Can the manager conclude that the mean wait time is now greater than 9 minutes? Perform a hypothesis test, using the 0.05 level of significance. (a) State the null hypothesis Ho and the alternative hypothesis H₁. Ho: O H₁:0 (b) Perform a Z-test and find the p-value. Here is some information to help you with your Z-test. The value of the test statistic is given by Standard Normal Distribution Step 1: Select one-tailed or two-tailed. O One-tailed O Two-tailed Explanation μ Check □<口 X X OSO 020 0=0 x-H √n • The p-value is the area under the curve to the right…
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