A simple random sample of size n= 15 is drawn from a population that is normally distributed. The sample mean is found to be x= 32.2 and the sample standard deviation is found to be s = 6.3. Determine if the population mean is different from 26 at the a=0.01 level of significance. Complete parts (a) through (d) below. (a) Determine the null and alternative hypotheses. Ho: = 26 * 26 (b) Calculate the P-value. P-value = (Round to three decimal places as needed.)

A simple random sample of size n= 15 is drawn from a population that is normally distributed. The sample mean is found to be x= 32.2 and the sample standard deviation is found to be s = 6.3. Determine if the population mean is different from 26 at the a=0.01 level of significance. Complete parts (a) through (d) below. (a) Determine the null and alternative hypotheses. Ho: = 26 * 26 (b) Calculate the P-value. P-value = (Round to three decimal places as needed.)

Name: A simple random sample of size n= 15 is drawn from a population that
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: A simple random sample of size n= 15 is drawn from a population that is normally distributed. The sample mean is found to be x = 32.2 and the sample standard deviation is found to be s = 6.3. Determine if the population mean is different from26 at t

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A random sample is obtained from a normal population with a mean of u=95 and a standard deviation of o=40. The sample mean is M=86. a.is the a representative sample mean or an extreme value for a sample of n=16 scores?
For each of the examples below, go through the four steps of hypothesis testing; report your results in APA format. Use alpha of .05 and a two tailed test for each example. According to 2014 data from the Centers for Disease Control and Prevention, the average life expectancy in the United States is 78.74 years with other sources listing the standard deviation, σ, for this data as 16.5 years. A researcher is interested in determining if rock musicians die at an earlier age and collects a random sample of 45 dead rock musicians. The researcher finds an average age of death of 45.2 years for the sample. Use this statistic to evaluate the researcher’s hypothesis.
A school district claims that the average salary of elementary school teachers in their district is more than the national average of $42,000. A sample of 30 elementary school teachers from that district have a mean salary $43,260. The standard deviation for the population is $5,230. At α = 0.05, test their claim that teachers in their district earn more than $42,000 per year.
The mean age of graduate students at a University is at most 31 years with a standard deviation of 2 years. A random sample of 15 graduate students is taken. The sample mean is 32 years and the sample standard deviation is 3 years. Are the data significant at the 1% level? a. State the null and alternative hypothesesb. Performzscore and find p-valuec. Perform Cohen's d equationd. State answer
A population has a mean μ=136 and a standard deviation σ=26. Find the mean and standard deviation of the sampling distribution of sample means with sample size n=50. The mean is μx= _____, and the standard deviation is σx=____.
A population has a mean μ = 73 and a standard deviation o = 28. Find the mean and standard deviation of a sampling distribution of sample means with sample size n = 257. Hx ox (Simplify your answer.) (Type an integer or decimal rounded to three decimal places as needed.)
A random sample of n1 = 49 measurements from a population with population standard deviation ?1 = 3 had a sample mean of x1 = 9. An independent random sample of n2 = 64 measurements from a second population with population standard deviation ?2 = 4 had a sample mean of x2 = 11. Test the claim that the population means are different. Use level of significance 0.01.
hh
An IQ test is designed so that the mean is 100 and the standard deviation is 10 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99% confidence that the sample mean is within 4 IQ points of the true mean. Assume that σ=10 and determine the required sample size using technology. Then determine if this is a reasonable sample size for a real world calculation.
What is the Pvalue?
We want to obtain a sample to estimate a population mean. Based on previous evidence, researchers believe the population standard deviation is approximately σ=56.8σ=56.8. We would like to be 99% confident that the estimate is within 0.1 of the true population mean. How large of a sample size is required?n=___
Using the first image's question, answer all the questions asked in second image.