Please please answer both questions.I will really really upvote.Thanks The standard deviation of the lifespan of a certain brand of LED light bulbs is 20 months. The qualitycontrol department at this company takes a random sample of 70 LED light bulbs and finds the meantifespan of sample is 147 months. What is the probability that this sample mean is within 3 months of themean of all light bulbs produced by the company? Round the solution to four decimal places, if necessary.P(z within 3 months of u)%3DQuestion Help: O VideoSubmit Question According to recent research, 51% of Americans have less than $400 in the bank for an emergency. Let p bethe proportion of people who have less than $400 in the bank for an emergency in a random sample of 100Americans.Determine the probability that the proportion of people in a random sample of 100 Americans who haveless than $400 in the bank for an emergency is within 9% of the population proportion. Round the solutionto four decimal places.P(p within 9% of the population proportion)%3DDetermine the probability that the proportion of people in a random sample of 100 Americans who haveless than $400 in the bank for an emergency is less than the population proportion by 6% or more. Roundthe solution to four decimal places.P(p less than the population proportion by 6% or more)Question Help: OVideo 1 D Video 2Submit All Parts

We have given that. 1) X~N( μ , ?^2 ) μ =147 , ? =20 , n=70 Z-score =( x - μ )/?

The standard deviation of the lifespan of a certain brand of LED light bulbs Is 20 months. The quality control department at this company takes a random sample of 70 LED light bulbs and finds the mean tifespan of sample is 147 months. What is the probability that this sample mean is within 3 months of the mean of all light bulbs produced by the company? Round the solution to four decimal places, if necessary. P(z within 3 months of u) %3D Question Help: O Video Submit Question

The standard deviation of the lifespan of a certain brand of LED light bulbs Is 20 months. The quality control department at this company takes a random sample of 70 LED light bulbs and finds the mean tifespan of sample is 147 months. What is the probability that this sample mean is within 3 months of the mean of all light bulbs produced by the company? Round the solution to four decimal places, if necessary. P(z within 3 months of u) %3D Question Help: O Video Submit Question

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 26PFA

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