Do you want to own your own candy store? Wow! With some interest in running your own business and a decent credit rating, you can probably get a bank loan on startup costs for franchises suchas Candy Express, The Fudge Company, Karmel Corn, and Rocky Mountain Chocolate Factory. Startup costs (in thousands of dollars) for a random sample of candy stores are given below. Assumethat the population of x values has an approximately normal distribution.94 180125 96 75 94 116 100 85n USE SALT(a) Use a calculator with mean and sample standard deviation keys to find the sample mean startup cost x and sample standard deviation s. (Round your answers to four decimal places.)X =thousand dollarsS =thousand dollars(b) Find a 90% confidence interval for the population average startup costs u for candy store franchises. (Round your answers to one decimal place.)lower limitthousand dollarsupper limitthousand dollars

Given 94,180,125,96,75,94,116,100,85

Answered: Company, Karmel Corn, ROCky tup costs…

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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Enrollment (thousands) 53 28 27 36 42 Burglaries 86 57 32 131 157 For the following problems, use the sample data in the table above consisting of numbers of enrolled students (in thousands) and numbers of burglaries for randomly selected large colleges. Enrollment (thousands) 53 28 27 36 42 Burglaries 86 57 32 131 157 1. Find the linear correlation coefficient r and the critical values for a 0.05 significance level. What can be determined from this? 2. Which of the following change if the two variables of enrollment and burglaries are switched: the value of r, the critical values? 3. Does the value of r change from what was found in question 1 if the actual enrollment numbers of 53,000, 28,000, 27,000, 36,000 and 42,000 are used instead of 53, 28, 27, 36 and 42? 4. If you had calculated the value of the linear correlation coefficient to be 1.247, what should you conclude? 5. Find the regression equation for the sample data. What is the best-predicted number of burglaries,…
v Question Completion Status: d. 0.3085 QUESTION 2 EPA fuel economy estimates for automobile models tested recently predicts a mean of 24 and a standard deviation of 6 mpg. Assume that a Normal model applies, N(24, 6). mpg What proportion of automobiles would expect to have gas mileage rates between 10 and 16 mpg? O a. 0.1587 O b. 0.0819 C. 0.0099 O d. 0.0918 QUESTION 3
When using 1-Var Stats on a scientific or graphing calculator, the resulting statistical output includes two values for the standard deviation of the data set. These values are labeled as Sxand σx in the statistical output. Why is it necessary to give two values for the standard deviation? How would you choose which one to use as the standard deviation of a data set you are working with? Be sure to explain the difference between these two values as you answer these questions
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3.3
# 2 Desert Samaritan Hospital in Mesa, Arizona, keeps records of emergency room traffic. Those records reveal that the times between arriving patients have a mean of 8.7 minutes with a standard deviation of 8.7 minutes. Based only on the two values of these two parameters, give an argument based on the properties of the Normal distribution why it is unreasonable to assume that the times between arriving patients is normally distributed (or even approximately so). (Hint: Consider the range of data of a Normal distribution.)
The lengths of pregnancies in a small rural village are normally distributed with a mean of 266 days and a standard deviation of 16 days. In what range would you expect to find the middle 95% of most pregnancies? Between_______ and________ . If you were to draw samples of size 52 from this population, in what range would you expect to find the middle 95% of most averages for the lengths of pregnancies in the sample? Between __________and ________. Enter your answers as numbers. Your answers should be accurate to 1 decimal places.
Also included in question find estimated variance of errors, estimated variance of slope, and 90% and 95% confidence intervals for slope. Thank you so much
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Calcium levels in people are normally distributed with a mean of 9.7 mgdL and a standard deviation of 0.5 mgdL . Individuals with calcium levels in the bottom 10% of the population are considered to have low calcium levels. Find the calcium level that is the borderline between low calcium levels and those not considered low. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place.
Statistics UPVOTE WILL BE GIVEN. PLEASE WRITE THE COMPLETE SOLUTIONS. NO LONG EXPLANATION NEEDED. ANSWER A AND B ONLY

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