You have been asked to determine the average amount that fishermen spend per year on food and lodging while on fishing trips in a certain state. Your estimate is to be within   + / − $25 of the population mean; the confidence level is to be 95%; and the estimated standard deviation for the amount spent is $125 based on prior research. (z-score=1.96) How large a sample do you need?

Q: A random sample of 41 adult coyotes in a region of northern Minnesota showed the average age to be x…

A: a) Assume that μ is the population mean age of coyotes.

Q: Mr. Jackson is looking at test scores for his Algebra 2 class. The scores on the Unit 2 Test follow…

A: We have to find given probability.

Q: the mean iq for the u.s. is 100 with a standard deviation of 15. a troy statistics professor thinks…

A: The given data is as follows: IQ95100105110115100105110105105

Q: Molly's score was 68 on a test with a mean of 80 and a standard deviation of 9.  What is her…

A:

Q: 11.26 Heights of male students. To estimate your campus, you will measure an SRS of students.…

A: GivenMean(μ)=70standard deviation(σ)=2.8

Q: The mean salary at a local industrial plant is $29,600$⁢29,600 with a standard deviation of…

A: Suppose the random variable x defines the amount of salary.

Q: A successful basketball player has a height of 6 feet 7 inches, or 201 cm. Based on statistics from…

A: The player’s height of 6 feet 7 inches corresponds to a z-score of 3.74, z-score corresponds to the…

Q: (c) Carry out the test of hypothesis using the p-value approach and a = 0.10. %3D

A: T test for 2 samples

Q: The average dog at a dog facility takes 25 trials in order to learn how to sit, with a standard…

A: The normal distribution is a continuous probability distribution that has wide applications. X…

Q: The wingspan of puffins is normally distributed with a mean of 20 inches. Alaska's Department of…

A: Given that  Sample size n =20 Population mean =20 Level of significance =0.01

Q: You are given the following information for a sample (mean = 40; standard deviation = 10). What is…

A: According to the provided information:

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: You have a normal distribution of test scores with a mean of 100 and an SD of 15. Use the empirical…

A: given data normal distributionμ = 100σ = 15use empirical rule to answer . What range of scores…

Q: Lauren is interested in determining if the children in her preschool lie more than the population.…

A: The mean of the population is given and the sample mean and sample standard deviation are given for…

Q: A large group of students took a statistics test.               The mean score, from the scale of…

A:

Q: A. What response value represents the third quartile? B. What response value represents the 35th…

A: It is given that  Mean, μ = 4.7 Standard deviation, σ = 2.4

Q: You are conducting a study to see if the proportion of men over 50 who regularly have their prostate…

A:

Q: Use the data to answer the following questions: 10; 11; 15; 15; 17; 22 What number is two standard…

A:

Q: SAT scores are distributed with a mean of 1,500 and a standard deviation of 294. You are interested…

A: We have given that,  Standard deviation = 294 , Margin of error = 50 , And we need sample size (n) =…

Q: A group of students take a Statistics Exam where the average was M = 90 and the standard deviation…

A:

Q: Step 1. Test Set-up Tony V. owns a house painting business in Seattle. Based in his data, that it…

A: Given : μ = 3.5

Q: Answer part c

A:

Q: Do men take less time than women to get out of bed in the morning? The 57 men observed averaged 4.9…

A: Given:

Q: The prices of the tablets in a store have a mean of $735 and a standard deviation of $65. Calculate…

A: Given,   Mean = 735 Standard deviation = 65

Q: 1. At the local hockey arena, the food and beverage department need to make predictions about the…

A: Sample size (n)=25Sample mean x¯=$35Sample standard deviation (s)=$15To find 90% confidence interval…

Q: For bone density scores that are normally distributed with a mean of 0 and a standard deviation of…

A: The mean is 0 and the standard deviation is 1.

Q: The scores on a psychology exam were normally distributed with a mean of 56 and a standard deviation…

A:

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.