18. A doctor believes the number of births by season is uniformlydistributed. To test this claim you randomly select 1429 births andrecord the season in which each takes palce. The results are shownbelow. At a=0.01, can you reject the claim that the distribution isuniform?SeasonSpringSummerWinterFallBirths435442321231Step 1: State the hypotheses.Step 2: The level of significance, one/two-tailed test, degrees of freedomStep 3: Statistical TestStep 4: ComputationStep 5: Decision RuleStep 6: Reject Ho or Failed to Reject HoStep 7: Conclusion.(Ctrl)

The following information has been given: The sample size is n=4. Observed frequencies Season…

Answered: 18. A doctor believes the number of…

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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Scenario: 200 people were asked, “Who is your favorite superhero?” Below are the data. Test the null hypothesis that the population frequencies for each category are equal. α= .05. Iron Man Black Panther Wonder Woman Spiderman fo = 40 fo = 60 fo =55 fo = 45 fe = fe = fe = fe = What is the correct result based on the data?
You are playing a dice game with a friend and become suspicious that he is using weighted dice. So you stop the game, take one of his dice, and roll it 100 times. The results are in the table below. Do these results provide significant evidence that the proportion of times the dice lands on the six numbers are unequal? Calculate the chi-squared test statistic and the range the p-value falls in for this test. Number on die 1 2 4 Frequency 16 21 6 26 13 18 test statistic = 14.12, p-value in (.01, .025) test statistic = 24.368, p-value in (.005, .01) test statistic = 14.12, p-value in (.025, 05) test statistic = 24.368, p-value less than .005 O none of these
You intend to conduct a goodness-of-fit test for a multinomial distribution with 5 categories. You collect data from 71 subjects. What are the degrees of freedom for the x² distribution for this test? d.f. = 85
Stress at work: In a poll about work, 51% of respondents said that their jobs were sometimes or always stressful. Eleven workers are chosen at random.What is the mean number who find their jobs stressful in a sample of 11 workers? Round the answer to two decimal places.
You intend to conduct a goodness-of-fit test for a multinomial distribution with 3 categories. You collect data from 77 subjects. What are the degrees of freedom for the x? distribution for this test? d.f. =
You intend to conduct a goodness-of-fit test for a multinomial distribution with 3 categories. You collect data from 78 subjects. What are the degrees of freedom for the x? distribution for this test? d.f. =
#4
Change in the average birth weight of babies born in the U.S. since 1990, in ounces 0 -0.5- -1.0 -1.5 1990 '95 ¹00 "Born between 37 and 41 and net including multiple births Source: Obstetrics and Gynecology prvy. 105 A local hospital wanted to see if the claim was true and randomly sampled 19 baby's weights and found an average weight of 7 pounds. Test the claim using a 10% level of significance that the mean weight significantly smaller than the national average of 7.5 pounds. Use the population standard deviation of 1.25 pounds. Give answer to at least 4 decimal places. What are the correct hypotheses? (Select the correct symbols.) pounds Ho: Select an answer♥ ?✔ H₁: Select an answer? Based on the hypotheses, find the following: Test Statistic = p-value = pounds The correct decision is to [Select an answer The correct summary would be: [Select an answer weight significantly smaller than the national average of 7.5 pounds. What is the type I error in this situation? Select an answer…
Thirty-two different video games showing alcohol use were observed. The duration times of alcohol use (in seconds) were recorded. When using this sample for a t test of the claim that the population mean is greater than 77 sec, what does df denote, and what is its value? What does df denote? OA. The number of degrees of freedom O B. The sample size O C. The sample standard deviation O D. The test statistic The value of df is . (Type an integer or a decimal. Do not round.) Activate Windows Go to Settings to activataWInoowe Next Statcrunch 3:58 PM o 耳局 11/29/2021 2) Type here to search 4+ 144 %23 4 6 7. 00 R. T LO %24
Thanks for your help
MS
(a) Find the standard error of the mean for each sampling situation (assuming a normal population). (Round your answers to 2 decimal places.) Standard Error a. o = 30, n = 4 b. o = 30, n = 16 c. o = 30, n = 64

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