Automobiles Purchased An automobile owner found that 20 years ago, 76% of Americans said that they would prefer to purchase an American automobile. He believes that the number is much less than 76% today. He selected a random sample of 60 Americans and found that 40 said that they would prefer an American automobile. Can it be concluded that the percentage today is less than 76%? At a=0.05, is he correct? Use the P-value method with tables. Do not round intermediate steps.

Q: Why does The concept of degrees of freedom introduced?

A: First we define the degrees of freedom .  Degrees of freedom :   It refers to the number of values…

Q: B is the wrong option

A: Simple linear regressions can be carried out, as they have been done previously for other sources,…

Q: Describe about the Rejecting H0 Is a Strong Decision.

A:

Q: The number of students taking the Scholastic Aptitude Test (SAT) has risen to an all-time high of…

A: The number of times the SAT was taken and the number of students are as follows.     Number of…

Q: Which method (substitution or elimination) did they use?

A:

Q: What is the variance and standard deviation for the number of times the SAT is taken?

A: We want to variance and standard deviation

Q: What's the answer to"state your conclusion"

A: We found that, p-value is 0.000 and level of significance is a= 0.05 A drug company claims that less…

Q: What does the speaker tell you about the process?

A: Given that USL = 1.01, LSL = 0.99 and =0.003.The cpk index was found to be 0.889.

Q: fifty-five percent of the students at villa fundamental walk to school. of all the students in the…

A: Given query is to find the number of students attend the school.

Q: the answer is cropped out.

A: The variable x denotes the number of accidents daily.

Q: What is the probability that a student takes the SAT more than one time? Q-2  Refer to the data…

A: From given table, Total = 721769+601325+166736+22299+6730 = 1,518,859

Q: Describe about the two types of incorrect decisions.

A: Two possibilities of the test result: Reject the null hypothesis. Fail to reject the null…

Q: Is Getting a suntan and getting a lot of junk mail Independent or Dependent?

A: The cause is that the variable. Its price is unaffected by the opposite factors in your study. The…

Q: What is the Ho and Ha

A: Null hypothesis  is the hypothesis  of no difference While alternative  hypothesis is the claim that…

Q: How do you do a spearman’s test ranking

A: To perform spearman's rank correlation coefficient,   Let X and Y are two variables.. first we find…

Q: List and explain all three classes of decision making?

A: 1. **Strategic Decision Making****Definition and Scope:**Strategic decisions are high-level choices…

Q: What are the two types of incorrect decisions?

A: