Make a conclusion regarding the hypothesis . A credit score is used by credit agencies (such as mortgage companies and banks) to assess the creditworthiness of individuals. Values range from 300 to 850, with a credit score over 700 considered tobe a quality credit risk. According to a survey, the mean credit score is 709.3. A credit analyst wondered whether high-income individuals (incomes in excess of $100,000 per year) had higher creditscores. He obtained a random sample of 31 high-income individuals and found the sample mean credit score to be 722.3 with a standard deviation of 81.1. Conduct the appropriate test to determineif high-income individuals have higher credit scores at the a= 0.05 level of significance.State the null and alternative hypotheses.Ho HH₁ μ > 709.3(Type integers or decimals. Do not round.)Identify the t-statisticto = 89 (Round to two decimal places as needed.)Identify the P-value.P-value = 190 (Round to three decimal places as needed)Make a conclusion regarding the hypothesis.= = 709.3247 273the null hypothesis. There201212511202012124ہےsufficient evidence to claim that the mean credit score of high-income individuals is

Sample size n =31Sample mean=722.3Standard deviation =81.1

Answered: scores. He obtained a random sample 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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What are the two decisions that you can make from performing a hypothesis test? CO What are the two decisions that you can make from performing a hypothesis test? Select all that apply. A. fail to reject the alternative hypothesis C. reject the null hypothesis E. accept the null hypothesis G. make a type I error B. make a type Il error D. reject the alternative hypothesis F. fail to reject the null hypothesis H. accept the alternative hypothesis
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A news article reported that the college students who have part-timne jobs work an thought that the average might be different from 15 hours per week for their college. Data were collected on the number of hours per week for a average of hours per week. The staff of a college newspaper 15 random sample of students at the college who have part-time jobs. The test were used to test the hypotheses: Ho: u=15 H u+15, where u is the mean number of hours worked per week for all students at the college with part-time jobs. The results of the test are shown in the table. df t-stat p-value 13.755 3.535 25 -1.761 0.090 Assuming all conditions for inference were met, a g5% confidence interval for u is: 13.755±ME MF s the margin of error. What is the ME? where %24
The FDA regulates that fish that is consumed is allowed to contain 1 mg/kg of mercury. In Alaska, bass fish were collected in 36 different lakes to measure the amount of mercury in the fish. Do the data provide enough evidence to show that the fish in Alaska lakes has more mercury than the allowable amount? Below, set up the Null Hypothesis Ho and the Alternative Hypothesis HA. Ho: H (? HẠ: H (?
A blind taste test is conducted to determine which of two colas, Brand A or Brand B, individuals prefer. Individuals are randomly asked to drink one of the two types of cola first, followed by the other cola, and then asked to disclose the drink they prefer. Results of the taste test indicate that 44 of 100 individuals prefer Brand A. Complete parts a through c. Conduct a hypothesis test (preferably using technology) Upper H0: p=p0 versus H1: p ≠ p0 for p0= 0.33, 0.34, 0.35, ..., 0.53, 0.54, 0.55 at the alpha α = 0.05 level of significance. For which values of p0 do you not reject the null hypothesis? What does each of the values of p0 represent? Do not reject the null hypothesis for the values of p0 between nothing ______ and ______ inclusively.
Please create a hypothesis based on the attached data. Then prove is the null or alternative hypothesis is true.
A doctor recorded the number of miles walked each day by patients over age 60 and the number of doctor visits in a year for 40 patients. The resulting data were used to conduct a hypothesis test to determine whether there is a linear relationship between the number of miles walked and the number of doctor visits. What are the correct hypotheses for the test?
Cigarette Smoking A researcher found that a cigarette smoker smokes on average 31 cigarettes a day. She feels that this average is too high. She selected a random sample of 10 smokers and found that the mean number of cigarettes they smoked per day was 28. The sample standard deviation was 2.7. At a=0.05, is there enough evidence to support her claim? Assume that the population is approximately normally distributed. Use the P-value method and a TI-83 Plus/TI-84 Plus calculator.
A blind taste test is conducted to determine which of two colas, Brand A or Brand B, individuals prefer. Individuals are randomly asked to drink one of the two types of cola first, followed by the other cola, and then asked to disclose the drink they prefer. Results of the taste test indicate that 57 of 100 individuals prefer Brand A. Complete parts a through c. (a) Conduct a hypothesis test (preferably using technology) Ho:p= Po versus H4:p#Po for po = 0.46, 0.47, 0.48, .., 0.66, 0.67, 0.68 at the a = 0.05 level of significance. For which values of po do you not reject the null hypothesis? What do each of the values of po represent? Do not reject the null hypothesis for the values of Po between and, inclusively. (Type integers or decimals as needed.)
Write the null and alternative hypothesis. Are Americans getting fatter? Researchers interested in this question take a random sample of 500 people and record an average weight of 190 pounds. Ten years ago, the average weight was 185 pounds. OA Ho: H= 190 HA: H> 190 О в. Но: и 185 HAiH> 185 OC. Ho: u= 190 HA:u< 190 O D. Ho: u= 185 HA: H< 185 OE. Ho:H= 185 HA u# 185
Please show step by step work: An original claim is made that 60% of American consumers are not comfortable with the use of drone delivery for merchandise. Hypothesis testing results in Rejection of the Null hypothesis. Using Figure 8-5 on page 366 of the text, clearly state the final conclusion reached from this hypothesis test.
A medical test is conducted to determine whether or not a new vaccine reduces the complications of dengue fever . State the null and alternative hypothesis Ho : Ha :

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