(Answered) Gpasin finding a confidence interval for a random sample of

Statistics

GPAs

In finding a confidence interval for a random sample of 30 students GPAs, one interval was (2.60, 3.20) and the other was (2.65, 3.15).

a. One of them is a 95% interval and one is a 90% interval. Which is which, and how do you know?

b. If we used a larger sample size (n = 120 instead of n = 30), would the 95% interval be wider or narrower than the one reported here?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92605101
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

A political researcher wants to determine if there is an

A political researcher wants to determine if there is an association between gender (male, female) and political party affiliation (Democrat, Republican, Independent). What type of statistical test should be used?

Consider the following random sample ofnbspdata8 6 -6 0 -9

Consider the following random sample of data: 8, 6, -6, 0, -9, 4, -1, 7, 6, 84 a) What is the standard deviation of the sample data? Round your response to at least 3 decimal places. b) If the outlier is removed, what is ...

Phillips owns 25 of mintor inc a private company in 2007

Phillips owns 25 % of Mintor, Inc. (a private company). In 2007, Mintor had sales of $22,00,000, had net income of $82,000 and Mintor paid $32,000 in dividends. If Phillips uses the Equity Income method, what did Phillip ...

Two people agree to meet at a coffee shop they each

Two people agree to meet at a coffee shop. They each independently pick a random moment in time between 8 a.m. and 9 a.m. and show up exactly at their selected time. But they are very impatient, and only stay for 10 minu ...

Assuming that the bank wants assets with high yields and

Assuming that the bank wants Assets with High Yields and Liabilities with Low Costs then what decisions would the bank make for the Interest Rates on both Loans (Fixed Rate Corporate, Floating Rate Corporate, Installment ...

The speed of cars on a stretch of road is normally

The speed of cars on a stretch of road is normally distributed with an average 42 miles per hour with a standard deviation of 5.9 miles per hour. What is the probability that a randomly selected car is violating the spee ...

In a study of helicopter usage and patient survival among

In a study of helicopter usage and patient? survival, among the 55,032 patients transported by? helicopter, 227 of them left the treatment center against medical? advice, and the other 54,805 did not leave against medica ...

Smithco is a supplier to many brand name makers of mobile

SmithCo is a supplier to many brand name makers of mobile phones. SmithCo manufactures the external shells that enclose mobile phones. The strength of a shell is measured by applying increasing pressure to the shell and ...

An investor would like to add the following bond to her

An investor would like to add the following bond to her portfolio. The bond would be held for 7 years and then sold. The investor has gathered the following information to analyze the bond: Company XYZ Currency: CAD Face ...

One sample has n 8 and ss 21 and a second sample has n 8

One sample has n = 8 and SS = 21 and a second sample has n = 8 and SS = 35. What is the pooled variance for the two samples?

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