A recent study of 50 self-service gasoline stations in the, Ask an Expert

Statistics

1. A recent study of 50 self-service gasoline stations in the Greater Cincinnati' Northern Kentucky metropolitan area revealed that the mean price of unleaded gas was $2.029 per gallon. The sample standard deviation was $0.03 per gallon.

Determine a 99 percent confidence interval for the population mean price.

2. The Badik Construction Company limits its business to constructing decks. The mean time to construct one of their standard decks is 8 hours for a two-person construction crew. The information is based on a sample of 40 decks recently constructed. The standard deviation of the sample was 3 hours.

Determine a 90 percent confidence interval for the population mean.

Describe how to find Confidence interval on the t-table.

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9375441

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

In a survey ofnbsp3153nbspadultsnbsp1407nbspsay they have

In a survey of 3153 adults, 1407 say they have started paying bills online in the last year. Construct a? 99% confidence interval for the population proportion. Interpret the results. A? 99% confidence interval for the p ...

Bond x1 is a premium bond with a 12 coupon bond x2 is a 6

Bond X1 is a premium bond with a 12% coupon. Bond X2 is a 6% coupon bond currently selling at a discount. Both bonds make annual payments, have a YTM of 8%, and have seven years to maturity. (Round off all answers to 2 d ...

1 approximately 20 of corporate workforce are not happy

1) Approximately 20% of corporate workforce are not happy with their immediate bosses. Suppose 10 workers working in corporates are randomly selected. a) What is the probability that everybody of them is happy with his i ...

Letnbspxbar6nbspdenote the sample mean of a

Let X(bar) 6 denote the sample mean of a sample X 1 , X 2 , ..., X 6 from Unif (-1, 3). (a) What is the expected value of X(bar) 6 ? (b) What is the variance of X(bar) 6 ?

A survey of a random sample of 1000 smartphone owners found

A survey of a random sample of 1000 smartphone owners found that the mean daily time spent communicating on a smartphone was 131.4 minutes. From previous studies, it is assumed that the population standard deviation is 2 ...

Sixty-seven percent of adults have looked at their credit

Sixty-seven percent of adults have looked at their credit score in the past six months. If you select 31 customers, what is the probability that at least 20 of them have looked at their score in the past six months?

You know that the price of sunland inc stock will be 36

You know that the price of Sunland, Inc., stock will be $36 exactly one year from today. Today the price of the stock is $34. Determine what must happen to the price of Sunland, Inc., today in order for an investor to ge ...

Two pediatricians want to investigate a new laboratory test

Two pediatricians want to investigate a new laboratory test that identifies streptococcal infection. Dr. Kidd uses the standard culture test, which has a sensitivity of 90% and specificity of 96%. Dr. Childs uses the new ...

Is the following an example of a binomial experimentat a

Is the following an example of a binomial experiment? At a campus activities board event, an entertainer gives tickets with sequential numbers to every attendee (i.e. 1, 2, 3, 4, 5... n). Throughout the event, the entert ...

Now assume that i am talking about a normally distributed

Now assume that I am talking about a normally distributed set of data: An IQ test. This IQ test has a mean of 100 and a standard deviation of 15. Find the following probabilities What is the probability that someone scor ...

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