(Answered) College professor claims that those entering college this

Statistics

College professor claims that those entering college this year appear to be smarter than the entering class from previous years, Tested random sample of 10 students entering finding their mean IQ of 113 with a standard deviation of 14. College records indicate that the mean IQ from previous years was 112. If we assume the IQ of this years class is normally distributed I there enough evidence to conclude at 0.1 level of significance the mean IQ of this years class is greater than previous years?

Use one tailed test.

Null hypothesis?

Alternative hypothesis?

Type of test statistic? Z t chi square or F?

Value of test statistic? round to 3 decimal places.

Critical value at 0.1 level of significance? round to 3 decimal places

Can we conclude at 0.1 level of significance that the mean IQ of this years class is greater than previous?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92428814
Price:- $10

Verified Expert

Priced at $20 Now at $10, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

The weights of ice cream cartons are normally distributed

The weights of ice cream cartons are normally distributed with a mean weight of 20 ounces and a standard deviation of 0.5 ounces. You randomly select 25 cartons. What is the probability that their mean weight is greater ...

Candidate as pollster conducted a survey in which 460 out

Candidate A's pollster conducted a survey in which 460 out of 720 respondents indicated they would probably vote for Candidate A. Compute the confidence interval for the population. This is the question that I'm stuck on ...

Discrete probability variablesthirtynbsppercent of

Discrete probability variables. Thirty percent of households say they would feel secure if they had? $50,000 in savings. You randomly select 8 households and ask them if they would feel secure if they had? $50,000 in sav ...

Show worksuppose you are thinking of purchasing the moore

Show Work Suppose you are thinking of purchasing the Moore Co.'s common stock today. If you expect Moore to pay $1.2, $1.26, $1.323, and $1.39 dividends at the end of year one, two, three, and four respectively and you b ...

You have two investments that either make money or lose

You have two investments that either make money or lose money. Each one has a 60 percent chance of making money, and a forty percent chance of losing money. There is a 30 percent chance that both investments make money. ...

How does a histogram help us know the probability of

How does a histogram help us know the probability of getting a certain value for a variable? In other words how does the histogram relate to probability?

Find the probability and explain the results pleasethe

Find the probability and explain the results please. The population mean annual salary for environmental compliance specialists is about ?$60,500. A random sample of 33 specialists is drawn from this population. What is ...

Use the standard normal distribution or Use the standard normal distribution or

Use the standard normal distribution or the? t-distribution to construct a 90?% confidence interval for the population mean. Justify your decision. If neither distribution can be? used. In a recent? season, the populatio ...

Sppose a and b are collectively exhaustive in addition pa

Suppose A and B are collectively exhaustive. In addition, P(A) = 0.2 and P(B) = 0.8. Suppose C and D are both mutually exclusive and collectively exhaustive. Further, P(C|A) = 0.7 and P(D|B) = 0.5. What are P(C) and P(D) ...

Which of the following techniques could we use to evaluate

Which of the following techniques could we use to evaluate the effect of sales at one coffee shop versus sales at another coffee shop, so see if the two shops might be cannibalizing business from one another?

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert