Identify the test statisticZ=Identify the P-ValueP-Value: A television show conducted an experiment to study what happens when buttered toast is dropped on the floor. When 45 buttered slices of toast were dropped, 24 ofthem landed with the buttered side up and 21 landed with the buttered side down. Use a 0.05 significance level to test the claim that toast will land with the butteredside down 50% of the time. Use the P-value method. Use the normal distribution as an approximation to the binomial distribution. After that, supposing the intent of theexperiment was to assess the claim that toast will land with the buttered side down more than 50% of the time, write a conclusion that addresses the intent of theexperiment.

Given that Sample size n =45 Favorable cases x =21 Sample proportion p^=x/n =21/45 =0.4667

Answered: A television show conducted an…

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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A researcher wants to know if peoples standardized test performance is influenced by what they are wearing. They ask 16 ppl to take the SAT while wearing their best professional outfit. 6 months later they have the same 16 ppl take the SAT while wearing a bathing suit. What test would you use and why? (z test, independent t test, single sample t test, paired samples)
A business has just completed a marketing campaign. They want to determine if their original market share of 50% has increased as a result of the campaign. A survey conducted found 81 out of 150 people had bought the products. Determine whether the company has increased its market share - Use either the p-value or the z statistic conduct the test. Has the market share of the company increased?- The marketing team plan to continue to monitor their market share. In a future study, they want to be able to estimate their market share to within +/−5% and with 90% confidence. What size sample is required? Use the sample proportion from part ii.
A basketball player wants to know if they make more than 75% of the penalty shots that they take. What is the appropriate test statistic for this scenario? one sample t-test two independent samples t-test two related samples t-test ANOVA
In a t-test for paired samples, the one value that compares, for each person, her or his two measurements is called the . Difference score Deviation score Standard deviation Standard difference
Many students suffer from math anxiety. Biostatistics lecturer offered his students a 2-hour lecture on math anxiety and ways to overcome it. The following table gives the test score for 7 students before and after they attended the lecture. Test at 5% significance level whether attending this lecture increases the score in Biostatistics. Before56694874657160 After62734485717073
A researcher believes that low BMI levels are indicators of eating disorders. He collects BMI of a sample of young adults identified as at risk for eating disorfers to see if their mean BMI is significantly below 18.5 What test would you use and why? (z test, independent t test, single sample t test, paired samples)
Summarize the similarities and differences between the one-sample t test, independent-measures t test, and repeated-measure t test.
Find the test statistic & p-value
Does the type of instruction in a college statistics class (either lecture or self-paced) influence students’ performance, as measured by the number of quizzes successfully completed during the semester? Twelve students were recruited for the study. Students received the lecture instruction or a self-paced instruction. The total number of quizzes completed during teach type of instruction appear below.
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Application Exercise: Dr. Butler is interested in the preference for dog breeds among college students. She collected the observed frequencies below and wants to know if the breeds are equally preferred. What can be concluded with an a of 0.05? Irish Setter Golden Retriever Papillon Great Dane 101 94 135 97 L What is the appropriate test statistic? -Select Compute the statistic selected in : M Obtain/compute the appropriate values to make a decision about Hg. Critical Value = | J: Test Statistic = Decision: -Select- N Compute the corresponding effect size(s) and indicate magnitude(s). If not appropriate, input and/or select "na" below. Effect Size = | ]: Magnitude: -Select-- Make an interpretation based on the results. O There is a significant relationship between dog breeds and college students. There is a significant dog breed preference among college students. O Dog breeds are equally preferred among college students.

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