What percent of the sample means will be greater than 135, Ask an Expert

Statistics

CRA CDs Inc. wants the mean lengths of the "cuts" on a CD to be 144 seconds (2 minutes and 24 seconds). This will allow the disk jockeys to have plenty of time for commercials within each 10-minute segment. Assume the distribution of the length of the cuts follows the normal distribution with a population standard deviation of 11 seconds. Suppose we select a sample of 21 cuts from various CDs sold by CRA CDs Inc.

a) What percent of the sample means will be greater than 148 seconds? (Round your answer to 2 decimal places.)

b) What percent of the sample means will be greater than 135 but less than 148 seconds? (Round your answer to 2 decimal places.)

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9369353

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

What is the minimum cash flow that could be received at the

What is the minimum cash flow that could be received at the end of year three to make the following project "acceptable?" Initial cost = $63,000; cash flows at end of years one and two = $35,000; opportunity cost of capi ...

Ann and bill play rock-paper-scissors each has a strategy

Ann and Bill play rock-paper-scissors. Each has a strategy of choosing uniformly at random out of rock, paper, and scissors every round (making independent selections each round). Each round can end in a win, loss, or a ...

A fair coin is flipped 100 times your friend proposes a bet

A fair coin is flipped 100 times. Your friend proposes a bet where if it lands on heads 49, 50, or 51 times, you win $4, but if it lands on heads more than 51 times or less than 49 times, you lose $1. Should you take the ...

Suppose that 20 of men p20 and 15 of women p 15 are

Suppose that 20% of men (P=.20) and 15% of women (P= .15) are carriers of a particular genetic trait. That trait can only be inherited by a child if both parents are carriers. What is the probability that a child is born ...

The probability of a potential employee passing a training

The probability of a potential employee passing a training course is 86%. If you selected 15 potential employees and gave them the training course, what is the probability that more than 12 will pass the test?

Find the z-score boundary that separates a normal

Find the z-score boundary that separates a normal distribution as described in each of the following: The lowest 20% of scores

Problem arrival of vehicles at new jersey turnpike toll

Problem: Arrival of vehicles at New Jersey Turnpike toll booth on Saturdays at dawn is modeled as a Poisson Arrival process with a rate of 1.21 vehicles per minute. Let X be a random variable that records the number of a ...

Suppose you believe that du ponts stock price is going to

Suppose you believe that Du Pont's stock price is going to decline from its current level of $82 sometime during the next 5 months. For $5.25 you could buy a 5-month put option giving you the right to sell shares at a pr ...

New varieties of corn with altered amino acid content are

New varieties of corn with altered amino acid content are being investigated for higher nutritional content. The two new varieties, opaque-2 and floury-2, were to be compared to the normal corn. Also different levels of ...

How do you find the minimum sample size when population

How do you find the minimum sample size when population standard deviation is anywhere between 14 to 24, and the half-width B desired could be anywhere between 2 to 7?

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