Ask Question, Ask an Expert

+61-413 786 465

info@mywordsolution.com

Ask Statistics and Probability Expert

Statistics


Home >> Statistics and Probability

1) Suppose that a standard deviation is known to be 3. How large a sample size is needed to have an error of 2 on a 99% confidence interval?

2) If n= 48 packages are randomly selected from packages received by parcel service. The sample has a mean weight of 18.6 lbs. Assume that s=3.4 lbs. What is the 95% confidence interval for the true mean weight of all packages received by the parcel service?

a) 17.8-19.4 lbs
b) 17.6-19.6 lbs
c) 17.3-19.9 lbs
d) 17.5-19.7 lbs

3) A random sample of 150 visitors to a park spent an average of $142 with a standard deviation of $47.50. Determine the 98% confidence interval for the mean money spent by all visitors to the park.

4) A marketing survey reveals that 58 out of 750 randomly selected shoppers is an extreme couponer. Find a 95% confidence interval for the population proportion of extreme couponers.

5) A random sample of n= 40 farming regions was selected to receive an average price of $9.75 with a standard deviation of $1.85 per 100 lbs of watermelon. Find a 90% confidence interval for the population mean price per 100 lbs of watermelon.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M91617287
  • Price:- $20

Priced at Now at $20, Verified Solution

Have any Question?


Related Questions in Statistics and Probability

Assume that the box contains 12 balls 4 red 4 green and 4

Assume that the box contains 12 balls: 4 red, 4 green, and 4 blue. Two balls are drawn at random, one after the other without replacement. What is the probability that the first ball was blue, given that the second was r ...

Honda is the manufacturer of 4 of the top 9 vehicles in

Honda is the manufacturer of 4 of the top 9 vehicles in terms of fuel economy. - Determine the probability distribution for the number of Hondas in a sample of 3 cars chosen from the top 9? - What is the likelihood that ...

The probability that a football game will go into overtime

The probability that a football game will go into overtime is 15%. What is the probability that exactly two of three football games will go to into? overtime? Round to the nearest thousandth.

A running shoe company wants to sponsor the fastest 3 of

A running shoe company wants to sponsor the fastest 3% of runners. You know that in this race, the running times are normally distributed with a mean of 6.8 minutes and a standard deviation of 0.37 minutes. How fast woul ...

The probability of the mets winning a game against the

The probability of the Mets winning a game against the Diamondbacks is 3/4. If they are playing a three-game series this weekend, what is the probability that the Mets will win at least 2 out of 3 games?

What is the maximum dollar amount that you would be willing

What is the maximum dollar amount that you would be willing to pay for an investment that pays $10,000 every second year forever if the 1st payment occurs four years from today (the 2nd payment will occur in six years et ...

The table below shows the results of a survey in which

The table below shows the results of a survey in which 2556 adults from Country? A, 1107 adults from Country? B, and 1060 adults from Country C were asked if human activity contributes to global warming. Complete parts? ...

An independent-measures study has one sample with n 10 and

An independent-measures study has one sample with n = 10 and a second sample with n = 15 to compare two experimental treatments. What is the df value for the t statistic for this study?

A researcher wants to determine if lead levels are

A researcher wants to determine if lead levels are different between the top of a glass of water and the bottom of a glass of water. Many samples of water are taken. From half, the lead level at the top is measured and f ...

What is the appropriate statistical analysis to use t-test

What is the appropriate statistical analysis to use: t-test for two independent samples, t-test for dependent samples, ANOVA, or chi-square test of independence? Please identify and explain why it is appropriate. (a) A s ...

  • 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

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As

Follow Us

© Copyright 2013-14 mywordsolution.com All rights reserved