Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $30,000 and $50,000. Assume that a 95%confidence interval estimate of the population mean annual starting salary is desired.a. What is the planning value for the population standard deviation?0 =b. How large a sample should be taken if the desired margin of error is $500? Use a rounded z value (2 decimals) in your calculations. Round your answer for n to next wholenumber.$190?$100?c. Would you recommend trying to obtain the $100 margin of error? Explain.Select your answer -

The annual starting salaries for college graduates with degrees in business administration are…

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Internet providers: In a survey of 992 homeowners with high-speed Internet, the average monthly cost of a high-speed Internet plan was $65.8 with standard deviation $11.14. Assume the plan costs to be approximately bell-shaped. Estimate t number of plans that cost between $43.52 and $88.08. Round to the nearest whole number. The number of plans that cost between $43.52 and $88.08 is
What was the age distribution of prehistoric Native Americans? Extensive anthropological studies in the southwestern United States gave the following information about a prehistoric extended family group of 82 members on what is now a Native American reservation. For this community, estimate the mean age expressed in years, the sample variance, and the sample standard deviation. For the class 31 and over, use 35.5 as the class midpoint. (Round your answers to one decimal place.) Age range (years) Number of individuals 1-10 30 11-20 19 21-30 20 31 and over 13 Need Help? Read
Starting salaries of 105 college graduates who have taken a statistics course have a mean of $43,442. Suppose we know that the population standard deviation o is $8,975. Using a 0.97 degree of confidence, find both of the following: A. The margin of error E B. The confidence interval for the mean l:
What was the age distribution of prehistoric Native Americans? Extensive anthropological studies in the southwestern United States gave the following information about prehistoric extended family group of 80 members on what is now a Native American reservation. For this community, estimate the mean age expressed in years, the sample variance, and the sample standard deviation. For the class 31 and over, use 35.5 as the class midpoint. (Round your answer to one decimal place.) Average range(years) 1-10 11-20 21-30 31 and over # of individuals 35 21 16 8 Mean=S2= S=
Use the magnitudes (Richter scale) of the 120 earthquakes listed in the accompanying data table. Use technology to find the range, variance, and standard deviation. If another value, 8.00, is added to those listed in the data set, do the measures of variation change much? 3.272.452.542.432.752.372.192.421.911.432.851.731.992.322.332.704.742.873.382.722.833.423.952.993.873.473.082.942.703.602.842.373.033.232.593.643.242.662.352.432.813.952.522.922.983.412.272.562.933.162.201.151.934.002.542.832.352.311.522.801.951.602.452.332.081.553.201.491.812.551.662.352.452.082.192.752.002.792.392.671.692.881.841.991.862.561.972.183.671.553.162.461.881.502.793.283.822.752.452.712.541.642.183.032.361.481.922.322.651.411.391.802.242.302.481.732.402.442.482.44
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You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on previous study, you believe the population standard deviation is approximately ở = 69.9 dollars. You would like to be 95% confident that your estimate is within 3 dollar(s) of average spending on the birthday parties. How many parents do you have to sample? instructor
Scores on an aptitude test are normally distributed with a mean of 960 and standard deviation of 120. Use the Cumulative Z-Score Table to answer the following questions. Write your answer rounded to the nearest whole number. If 1,570,000 students take the test.. how many would you expect to score above 1224? students ...how many would you expect to score above 972? students ...how many would you expect to score between 972 and 1224? students
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