State your decision to the significance test in terms of the null hypothesis. Consumer data reports that 50% of shoppers who enter a store on Black Friday end up making a purchase. In order to receive a bonus for their efforts, the marketing department of an electronics retailer must show that their stores have exceeded this proportion. A random sample of 320 Black Friday customers found that 176 of them ending up making a purchase. Use the following results and a 0.01 significance level to state your decision about Ho- Но : р— 0.50 Ні : р>0.50 Test statistic: z = 1.79 p-value = 0.0368 There is not enough information. Reject Ho Reject H1 Do not reject Ho Do not reject H1

State your decision to the significance test in terms of the null hypothesis. Consumer data reports that 50% of shoppers who enter a store on Black Friday end up making a purchase. In order to receive a bonus for their efforts, the marketing department of an electronics retailer must show that their stores have exceeded this proportion. A random sample of 320 Black Friday customers found that 176 of them ending up making a purchase. Use the following results and a 0.01 significance level to state your decision about Ho- Но : р— 0.50 Ні : р>0.50 Test statistic: z = 1.79 p-value = 0.0368 There is not enough information. Reject Ho Reject H1 Do not reject Ho Do not reject H1

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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After Halloween, your statistics instructor wanted to find out if there was a significantly different number of Smarties per box. Eight 50-gram boxes of Smarties were randomly selected and the number of Smarties that were in each box were counted. Amazon's Alexa indicates that there are a mean of 45 Smarties in a 50-gram box. The number of Smarties in the 8 boxes was 40 52 55 45 48 45 50 60. Test the hypothesis at the 5% significance level (α = 0.05) using the 5-step hypothesis testing procedure (show ALL steps). Make sure to clearly state the null and alternative hypotheses in formal notation. Round all values to 2 decimal places.
59% of students entering four-year colleges receive a degree within six years. Is this percent smaller than for students who play intramural sports? 155 of the 276 students who played intramural sports received a degree within six years. What can be concluded at the level of significance of a = 0.01?
if you could also find the p-value, that would be fantastic!
help me fix a please !!
Are job applicants with easy to pronounce last names just as likely to get called for an interview than applicants with difficult to pronounce last names. 530 job applications were sent out with last names that are easy to pronounce and 805 identical job applications were sent out with names that were difficult to pronounce. 413 of the "applicants" with easy to pronounce names were called for an interview while 637 of the "applicants" with difficult to pronounce names were called for an interview. What can be concluded at the 0.05 level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: H₁: Select an answer ✓ Select an answer ✓ Select an answer ✓ Select an answer ✓ b. The test statistic ? ✓ = Select an answer Select an answer c. The p-value = d. The p-value is ? ✓ a e. Based on this, we should f. Thus, the final conclusion is that ... (please enter a decimal) (Please enter a decimal) (please show your answer to 3 decimal…
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According to the Center of Disease Control and Prevention (CDC), 18% of adults in the U.S. over 19 are vaping. A medical doctor feels the percent is higher. He performs a hypothesis test at a 1% significance level and finds the p-value to be 0.0073The conclusion would be: a. There is not enough evidence to support the doctor's claim. b. No conclusion can be made. c. There is enough evidence to support the doctor’s claim
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…
For a certain year, a study reports that the percentage of college students using credit cards was 87%. A college dean of student services feels that this is too high for her university, so she randomly selects 225 students and finds that 190 of them use credit cards. At the .01 significance level, is she correct about her university?
A study was designed to compare the smoking habits of married men with those married women. A random sample of 240 men revealed that 180 smoked. A random sample of 220 women indicate that 54 smoked. At the 0.01 significance level does the evidence show that a higher proportion of men smoke?