CNNBC recently reported that the mean annual cost of auto insurance is 968 dollars. Assume the standarddeviation is 241 dollars. You take a simple random sample of 83 auto insurance policies.Find the probability that a single randomly selected value is more than 981 dollars.P(X> 981)=Find the probability that a sample of size n = 83 is randomly selected with a mean that is more than 981dollars.P(M> 981) =Enter your answers as numbers accurate to 4 decimal places.

Answered: Image /qna-images/answer/a7e4f8c9-29fa-477d-8c6f-dba6732704d0.jpg

Answered: CNNBC recently reported that the mean…

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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For example, let us assume that the mean quantity of cholesterol in eggs is 185 milligrams with a standard variation of 8 milligrams. Calculate the probability that the mean amount of cholesterol in a sample of 44 eggs will be within 3 milligrams of the mean amount of cholesterol in the general population.
A mobile phone brand has a mean time of failure that equals to 1000 days. What is the probability that a phone from this brand lives less than 500 days? (Note: write the probability as an integer or as a percentile without the % sign)
Assume that adults have IQ scores that are normally distributed with a mean of 98 and standard deviation of 15. Find the probability that a randomly selected adult has an IQ greater than 104.
CNNBC recently reported that the mean annual cost of auto insurance is 1004 dollars. Assume the standard deviation is 212 dollars. You take a simple random sample of 73 auto insurance policies.Find the probability that a single randomly selected value is less than 968 dollars.P(X < 968) = Find the probability that a sample of size n=73n=73 is randomly selected with a mean less than 968 dollars.P(M < 968) = Enter your answers as numbers accurate to 4 decimal places.
In Math 150 class the points of the final exam are normally distributedWith a mean of 72 and standard deviation of 10. The top 15% will receive an A gradeFind the lowest score in the final exam that would qualify a student for an A grade.
from year s of teaching ,a statsitics profeessor knoes that Amy , her student 's test scre will be a randonm variable with mean = 75 and variance = 25. what can be the lowest estimate on probability that Amy will socre between 65 and 85.
CNNBC recently reported that the mean annual cost of auto insurance is 1016 dollars. Assume the standard deviation is 271 dollars. You take a simple random sample of 100 auto insurance policies. Find the probability that a single randomly selected value is less than 978 dollars. P(X < 978) = %3D Find the probability that a sample of size n = 100 is randomly selected with a mean less than 978 %3D dollars. P(X < 978) = %3D Enter your answers as numbers accurate to 4 decimal places.
Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is 122000 dollars. Assume the standard deviation is 41000 dollars. Suppose you take a simple random sample of 97 graduates.Find the probability that a single randomly selected salary that doesn't exceed 126000 dollars.Answer = Find the probability that a sample of size n=97n=97 is randomly selected with a mean that that doesn't exceed 126000 dollars.Answer = Enter your answers as numbers accurate to 4 decimal places.
Alfie Solomons owns a rum distillery. On average, he produces 100 liters of rum with a standard deviation of 18 liters. What is the probability of producing an average of 90 liters of rum or more over the course of 9 days?
CNNBC recently reported that the mean annual cost of auto insurance is 954 dollars. Assume the standard deviation is 271 dollars. You take a simple random sample of 96 auto insurance policies.Find the probability that a single randomly selected value is less than 969 dollars.P(x<969)=P(x<969)= Find the probability that a sample of size n=96n=96 is randomly selected with a mean less than 969 dollars.P(¯x<969)=P(x¯<969)= Enter your answers as numbers accurate to 4 decimal places.
In a random sample of ten cell phones, the mean full retail price was $554.00 and the standard deviation was $167.00. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 95% confidence interval for the population mean u. Interpret the results. Identify the margin of error. (Round to one decimal place as needed.)
A mathematics professor one to determine whether there is a different in the final average just between the past two semester (semester 1 and semester 2) of his business is statistics classes. For a random sample of 16 students from semester 1, the mean of the final averages was 75 with a standard deviation of 4. For a random sample of 9 students from semester 2, the mean was 73 with a standard deviation of 6. Choose the correct answer

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