The mean number of credits earned by students is claimed to be 30.0. A random sampleis taken to test if the mean is different. The sample has x = 31.2 s= 2.1, and n= 40.%3DUse this data to solve problems 7 through 11.The stem and leaf plot below shows the running times in a 400 m run for a randomsample of 19 runners. 6|0 represents 60 seconds. Use this data for questions 18through 21.5|896|015587|02466898|12335For a one samplet-test with sample size 58, the degrees of freedom is:а. 58O b. 59О с. 57 Using the data given on no.2: A one sample t-test is conductedon: Ho:H = 81.6. The sample hasX=84.1 s= 3.1, and n= 25. The test statistic isa. 0.0806O b. 1.803O c. 4.032Using the data given on No. 2:A one sample t-test is conducted with H a: H < 10. If t= -2.46and df = 25, the p-value is:a. between 0.01O b. between 0.01and 0.025and 0.02between 0.005 and 0.01

Here AS PER POLICY I SHOULD HAVE TO CALCULATE FIRST MAIN QUESTION EVEN THOUGH I HAVE CALCULATED 2…

Answered: For a one sample t-test with sample…

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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Which of the following sampling methods was used in the study described below? A researcher is interested in knowing how many hours a week teenagers spend on social media. He surveys his daughter, who is a teenager, and fifty of her teen friends. a. simple random sample b. systematic sample c. convenience sample d. self-selected sample
Find the Mean and variance for the prompts below: State Farm Insurance Company reports that approximately 65% of all automobile damage liability claims are made by people under 20 years of age. A random sample of fifteen automobile insurance claims are under study.
A certain mall in the city has a population of 10,000 employees distributed in three different branches. If you would like to determine the sample size, what technique can be applied?
Given the following hypothesis ( null and alternative ), test statistic, and sample size, find the appropriate P- Value: A. H0: p= .3, p = .3 , Ha: p ≠ .3, n = 31, *z= -2.70 ( choose one ) a. .0035 b. .0060 c. .0070 d. .0120 B. H0: ? = .7, Ha: ? ≠ .7, n= 41, *t= -1.90 ( choose one ) a. .0287 b. .0320 c. .0574 d. .0640
For the following sample, use the computational formula to calculate SS and then compute the sample variance and standard deviation. Scores: 1, 3, 1, 1
Listed below are the lead concentrations (in ug/g) measured in different Ayurveda medicines. Ayurveda is a traditional medical system commonly used in India. The lead concentrations listed here are from medicines manufactured in the United States. Assume that a simple random sample has been selected. Use a 0.01 significance level to test the claim that the mean lead concentration for all such medicines is less than 14.0 µg /g. 2.96 6.45 5.99 5.51 20.53 7.45 11.97 20.46 11.52 17.54 D Identify the null and alternative hypotheses. Ho: H1: (Type integers or decimals. Do not round.) Identify the test statistic. (Round to two decimal places as needed.) Identify the P-value. (Round to three decimal places as needed.) State the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. V the null hypothesis. There sufficient evidence at the 0.01 significance level to V the claim that the mean lead concentration for all Ayurveda medicines…
In each of the following settings, decide whether you should use two-sample z procedures for a difference in proportions, two- sample t procedures for a difference in means, or paired t procedures for a mean difference. (a) A city planner is comparing traffic patterns at two different intersections. He randomly selects 12 times between 6:00 a.m. and 10:00 p.m., and he and his assistant count the number of cars passing through each intersection during the 10- minute interval that begins at that time. O Two-sample z test for p1 – P2 O Two-sample t test for µ – H2 Two-sample t test for x1 – x2 Paired t test for µdiff (b) How much greater is the proportion of senior citizens who attend a play at least once per year than the proportion of 20- somethings who do so? Random samples of 100 senior citizens and 100 people in their 20s were surveyed. Two-sample z test for p – P2 O Two-sample t test for x1 X2 O Two-sample t test for p1 – P2 O Two-sample t test for µ – µ2 (c) Luke's taco shop is…
Please help me in answering the following practice question:Given a random sample of the amount of protein (in gram) in one bag of snack food: 0.95, 0.85, 0.92, 0.95, 0.93, 0.86, 1, 0.92, 0.85, 0.81, 0.78, 0.93, 0.93, 1.05, 0.93, 1.06, 1.06, 0.96, 0.81, 0.96 Here, it is assumed that the amount of protein in the snack is normal. How would I calculate a 98% two-sided confidence interval for the average amount of protein in one bag?Thank you for your help in advance!
Opposing a random sample of size and equal 16A sample average of 185 it is observed the P value of the sample statistic is
For a two-tailed test with a sample size of 17 and a 0.20 level of significance, the t value is O a. 1.337 O b. 0.865 O c. 1.230 d. 1.734 O
Number calls coming to a call center for 5 days are as follows: 43 52 32 37 18 What is the third quartile of the number of calls coming in a day?
Does average cost of textbooks differ between Social Sciences and Natural Sciences? Based on a sample of 60 textbooks, the mean cost of Social Sciences textbooks is $175.2 and the mean cost of Natural Sciences textbooks is $120.25. Below is a randomization graph for this question with 1000 samples. Let group 1 be Social Sciences and group 2 be Natural Sciences. Perform a test of these hypotheses: Ho: P1 = P2 Ha P1* P2 ... .... -60 -40 -20 20 40 60 null = 0

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For a one sample t-test with sample size 58, the degrees of freedom is: