Ruby, a bowler, has a sample game score mean of 125.8 from 25 games. Ruby still claims that her average game score is140, and the low average can be attributed to chance. At the 5% significance level, does the data provide sufficient evidenceto conclude that Ruby's mean game score is less than 140? Given the sample data below, accept or reject the hypothesis.a 0.05 (significance level)20-0.52P 0.3015Select the correct answer below:O Reject the null hypothesis because the value of z is negative.O Do not reject the null hypothesis because |-0.52| 0.05O Reject the null hypothesis because the p-value 0.3015 is greater than the significance level a 0.05O Do not reject the null hypothesis because the p-value 0.3015 is greater than the significance level a 0.05O Reject the null hypothesis because |-0.521 > 0.05.

Given Null hypothesis average game score µ = 140Alternative Hypothesis : µ < 140at 5%…

Answered: Ruby, a bowler, has a sample game score…

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 marketing agency wanted to determine if a new commercial changed people's opinion about a company. They recruited n=30 participants to watch the commercial. First, everyone was givien a survey to determine their attitudes toward the company. Then, everyone watched the new commercial. Finally, they were given the same survey again and asked about their attitudes toward the comapny after seeing the commercial. The agency wanted to see if attitudes were changed by the commercial. What statistical test should they use?
The school newspaper claims that 45% of SMC students have iPhones. You think it's more. You simple random sample "G" students and "L" say that they have iPhones. Is there sufficient evidence at the 5% significance level (a = .05) to indicate that the percent of students with iPhones is more than 45% Show ALL work (or tell me what you plug into your calculator). Use specific wording like we do in class. G = 120 L =_6O Ho: Ha: Test statistic: p-val: Statistical conclusion: Conclusion in plain English:
Many people believe that criminals who plead guilty tend to get lighter sentences than those who are convicted in trials. The accompanying table summarizes randomly selected sample data for defendants in burglary cases. All of the subjects had prior prison sentences. Use a 0.05 significance level to test the claim that the sentence (sent to prison or not sent to prison) is independent of the plea. If you were an attorney defending a guilty defendant, would these results suggest that you should encourage a guilty plea? E Click the icon to view the table. Determine the null and alternative hypotheses. Ho: The sentence (sent to prison or not sent to prison) is independent of the plea H;: The sentence (sent to prison or not sent to prison OB. H, Pleading guilty reduces a defendant's chance of H;: Pleading guilty does not reduce a defendant's ch More Info OC. Ho: The sentence (sent to prison or not sent to prisor H,: The sentence (sent to prison or not sent to priso Guilty Plea 426 567 Not…
Please show all work. Pvalue?
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Provide an appropriate response. 1) A local supermarket claims that the waiting time for its customers to be served is the lowest in the area. A competitor's supermarket checks the waiting times at both supermarkets. The sample statistics are listed below. Test the local supermarket's hypothesis. Use a = 0.05. Local Supermarket n1 = 15 Competitor Supermarket n2 = 16 x2 = 5.6 minutes s2 = 1.0 minutes x1 = 5.3 minutes s1 = 1.1 minutes
More Info Guilty Plea Not Guilty Plea Sent to Prison Not Sent to Prison 384 53 592 63 Print Done
Magazine A national publishing house claims that 28% of all weekly magazine readers in SA read their publication. Test this claim at the 1% significance level, if a survey found that 104 out of a random sample of 400 magazine readers said that they read the specific publication.
Z?
Example: Assume that adults were randomly selected for a poll. They were asked if they "favor or oppose using federal tax dollars to fund medical research using stem cells obtained from human embryos.” Of those polled, 480 were in favor and 394 were opposed. A politician claims that people don’t really understand the stem cell issue and their responses to such questions are random responses equivalent to a coin toss. Use a 0.01 significance level to test the claim that the proportion of subjects who respond in favor is equal to 0.5. What does the result suggest about the politician’s claim? Following the hypothesis test steps, let’s first identify the claim and the null and alternative hypotheses: For this example, the original claim is that the proportion of the subjects who responded in favor is equal to 0.5 (half – since the politician compared their responses as equivalent to a coin toss). The symbolic form of the politician’s claim can be expressed as p = 0.5. Also notice…
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