(c) Use the binomial probability formula to determine the P-value for this test.P-value =(Round to three decimal places as needed.)What is the correct conclusion regarding the null hypothesis?O A. Do not reject Ho. Although no level of significance is given, there is insufficient evidence to suggest the proportion of babies who choose the helper toy isgreater than 0.5.B. Reject Ho. Although no level of significance is given, there is sufficient evidence to suggest the proportion of babies who choose the helper toy is greater than0.5.O C. Do not reject Ho. Although no level of significance is given, there is sufficient evidence to suggest the proportion of babies who choose the helper toy is greaterthan 0.5. A graduate student conducted an experiment in which 18 ten-month-old babies were asked to watch a climber character attempt to ascend a hill. On two occasions, thebaby witnesses the character fail to make the climb. On the third attempt, the baby witnesses either a helper toy push the character up the hill or a hinderer toy preventthe character from making the ascent. The helper and hinderer toys were shown to each baby in a random fashion for a fixed amount of time. The baby was thenplaced in front of each toy and allowed to choose which toy he or she wished to play with. In 15 of the 18 cases, the baby chose the helper toy. Complete parts (a)through (d) below.(a) Why is it important to randomly expose the baby to the helper or hinderer toy first?A. The randomness in the order of exposure is important to make sure half the babies see the helper first and the other half see the hinderer first.B. The randomness in the order of exposure is important to avoid bias.C. The randomness in the order of exposure is important to minimize the effect of the sample standard deviation.D. The randomness in the order of exposure is important to satisfy the conditions of using the binomial probability distribution.(b) What would be the appropriate null and alternative hypotheses if the researcher is attempting to show that babies prefer helpers over hinderers?Ho: PV0.5H4: p0.5

Answered: Image /qna-images/answer/48bc0cbe-b758-4bca-896a-d6622f438dc4.jpg

Answered: (c) Use the binomial probability…

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 is a misinterpretation of the results of a significance test? Choose the best asnwer below: A. concluding a P-value ≤ α implies a statistically significant result B. None of the above. C. deciding to fail to reject H0 because the P-value is larger than α D. concluding that the probability that H0 is true is equal to the P-value E. deciding to reject H0because the P-value is at most α
11:39 1 A myopenmath.com You are conducting a multinomial hypothesis test (a = 0.05) for the claim that all 5 categories are equally likely to be selected. Complete the table. Observed Expected Category Frequency Frequency A 13 В 11 C 12 17 E 23 Report all answers accurate to three decimal places. But retain unrounded numbers for future calculations. What is the chi-square test-statistic for this data? (Report answer accurate to three decimal places, and remember to use the unrounded Pearson residuals in your calculations.) What are the degrees of freedom for this test? d.f.= What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... less than (or equal to) a greater than a
5) The daily revenue at a university snack bar has records to indicate that the mean daily revenue is $2,400 and standard deviation is $600. A random sample of 81 days was selected. Find the approximate probability that the average revenue for the sample is less than $2,300.
A gambler complained about the dice. They seemed to be loaded! The dice were taken off the table and tested one at a time. One die was rolled 300 times and the following frequencies were recorded. Outcome 1 2 3 4 5 6 Observed 64 45 62 32 47 50 frequency O A USE SALT Do these data indicate that the die is unbalanced? Use a 1% level of significance. Hint: If the die is balanced, all outcomes should have the same expected frequency. (a) What is the level of significance? State the null and alternate hypotheses. Ho: The distributions are different. H,: The distributions are the same. O Ho: The distributions are the same. H,: The distributions are different. O Ho: The distributions are the same. H,: The distributions are the same. O Ho: The distributions are different. H,: The distributions are different. (b) Find the value of the chi-square statistic for the sample. (Round the expected frequencies to at least three decimal places. Round the test statistic to three decimal places.) Are all…
What are the requirements for the chi-square test for independence? (This is a reading assessment question. Be certain of your answer because you only get one attempt on this question.) Select all that apply. A. No more than 20% of the expected counts are less than 5. B. All expected counts are greater than 5. C. All expected counts are greater than 10. D. All expected counts are greater than 1. E. The expected counts must be approximately normal. F. No more than 10% of the expected counts are less than 5.
Which of these examples violates a basic assumption for a chi-square hypothesis test? a. A participant produces responses that can be counted twice in the same category. b. The expected frequency of a category is less than 10. c. A category includes frequencies or counts instead of scores. d. The population distribution for a category is not normal.
. The demand for high-grade gasoline at a service station is normally distributed with mean 27,009 gallons per day and standard deviation 4,530. Find two values that will give a symmetric 0.98 probability interval for the amount of high-grade gasoline demanded daily.
In testing a hypothesis that two categorical variables are independent using the x- test, the expected cell frequencies are based on assuming: Seleccione una: O A. the normal distribution. B. the variable are related. O C. the null'hypothesis. D. the alternative hypothesis.
In the chi square test, the expected frequencies: A. refer to those frequencies actually observed B. are expected to occur under the terms of the null hypothesis C. are expected to occur under the terms of the alternative hypothesis D. are never known by the researcher
You are conducting a multinomial Goodness of Fit hypothesis test for the claim that all 5 categories are equally likely to be selected. Complete the table. Report all answers correct to three decimal places. H0:pA=pB=pC=pD=pEH0:pA=pB=pC=pD=pEHa:Ha:At least one probability is not equal to the others (claim) Expected frequency 15.6 1.) What is the chi-square test-statistic for this data?χ2=
P VALUE FOR TEST HYPOTHESIS

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