3.11 Auto insurance premiums: Suppose a newspaper article states that the distribution of auto insurancepremiums for residents of California is approximately normal with a mean of $1600. The article also statesthat 25% of California residents pay more than $1850.a) What is the Z-score that corresponds to the top 25% (or the 75th percentile) of the standard normaldistribution? Round your answer to 2 decimal places.b) What is the mean insurance cost?c) What is the cutoff for the 75th percentile?d) Identify the standard deviation of insurance premiums in California. Round your answer to 1 decimal place.

Answered: Image /qna-images/answer/97115573-75d0-42f6-9531-468f663cbb64.jpg

Answered: 3.11 Auto insurance premiums: Suppose a…

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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The annual per capita consumption of ice cream (in pounds) in the United States can be approximated by the normal distribution, as shown in the figure to right. the (a) What is the largest annual per capita consumption of ice cream that can be in the bottom 9% of consumptions? (b) Between what two values does the middle 80% of the consumptions lie? UN H=19.8 4.3 8 20 32 Consumption (in lbs)
Answer the following question from the distribution represented bythe histogram below. How much can there be at most data that is smaller thanthe median estimate ?
1. For a normal distribution, find the percent of scores that lie between the scores having z values of z = -4 and z = 6
In a normal distribution, what z-score cuts off the top 65% of the distribution?a. z = 0.7422b. z = 0.2578c. z =0.39d. z = -0.39
can you help answer a. b. c
What is the proportion that lies between the z scores under the normal curve? A. 1.00 and -1.00 B. 1.96 and -1.96 C. 2.58 and -2.58 D. 0.00 and 1.00 E. 1.50 and 0.10 F. 2.00 and 0.80
Number of persons in the household 1 2 A. Below is a distribution of the variable "hompop" from the 2016 General Social Survey dataset. This variable is a measure of the number of people in each respondent's household. Use the table to answer the following questions. 3 4 5 7 8 9 10 11 Total www Freq. 850 1,069 436 278 139 58 19 2,867 percent 29.65 37.29 15.21 9.70 4.85 2.02 0.66 0.31 0.24 0.03 0.03 100.00 Cum. 29.65 66.93 82.14 91.84 96.69 98.71 99.37 99.69 99.93 99.97 100.00 1
A survey of 30 people was conducted about how many siblings they had. A graph was created that showed the percentage of the survey group, which had each number of siblings. The "frequency" column in the table shows the number of responses that having a certain number of siblings received. Using appropriate and precise statistical terminology, describe the distribution and provide an explanation for the distribution being a certain way.
18
14. The range is defined as the: a. variability of the data with reference to extreme scores. b. the variability of the data with reference to the mean. c. variability of the data in terms of how many subjects achieved each value of the variable. d. SS/n
9a. For binomially distributed data set, approximately what proportion would be below the mean and also within one standard deviation? 16.5%,25%,33%,50%,66%
q3

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