A random variable X can be modeled by the Exponentialdistribution, where ß = 0 = 4, λ = 1.(a) Complete the sentence.The distribution of X is ?μχ -0and ox(Enter numerical answers to two decimals.)=(b) Find P(2 ≤X ≤ 4). Use four decimals.X 25(c) Find the 25-th percentile. Enter your answer to twodecimals. Use two decimals in your answer.=◆, with(d) Find P(X> 8.5). Use four decimals in your answer.

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Answered: A random variable X can be modeled by…

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 accompanying table describes results from groups of 10 births from 10 different sets of parents. The random variable x represents the number of girls among 10 children. Use the range rule of thumb to determine whether 1 girl in 10 births is a significantly low number of girls. Click the icon to view the table. Use the range rule of thumb to identify a range of values that are not significant. The maximum value in this range is girls. (Round to one decimal place as needed.) - X Probability Distribution for x Number of Girls x 0 1 2 3 4 5 6 7 8 9 10 Print Get P(x) 0.002 0.013 0.044 0.115 0.208 0.234 0.201 0.115 0.043 0.019 0.006 Done k answer
Find the indicated probability and interpret the result. From 1975 through 2020, the mean annual gain of the Dow Jones Industrial Average was 653. A random sample of 33 years is selected from this population. What is the probability that the mean gain for the sample was between 400 and 800? Assume σ = 1540. The probability is ☐ (Round to four decimal places as needed.)
A food company is planning to market a new kind of cereal; however before, they want to find the % of people who will like it. They select a random sample of 500 people and ask them to try the cereal. Of 500, 290 people say they like it. Compute the 95% cofidence interval for the % of the pop. that will like the cereal. Interept this cofidence interval.
= 4 Determine whether the given procedure results in a binomial distribution. If not, state the reason why. Choosing 11 marbles from a box of 40 marbles (19 purple, 8 red, and 13 green) one at a time without replacement, keeping track of the number of red marbles chosen. O Not binomial: there are more than two outcomes for each trial O Binomial O Not binomial: the trials are not independent Continue Submit Assignmen O2022 McGraw Hill LLC. All Rights Reserved. Terms of Use |Privacy Center Accessibility MacBook Air 80 888 DII DD F2 F3 F4 F5 F6 F7 F8 F9 F10 F11
Use the expression in the accompanying discussion of sample size to find the size of each sample if you want to estimate the difference between proportions of men and women who own smartphones. Assume that you want 90% confidence that your error is no more than 0.04. The sample should include ___ men and ___ women.
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The length of time a particular smartphone's battery lasts follows an exponential distribution with a mean of ten months. A sample of 64 of these smartphones is taken. What is the distribution for the total length of time 64 batteries last? (Enter exact numbers as integers, fractions, or decimals.) X - ? v Additional Materials eBook
R A veterinarian recorded how many kittens were born in each litter. This data is summarized in the L histogram below. (Note: The last class actually represents "7 or more kittens," not just 7 kittens.) 14 12 10- 8- 6- 4 1 2 3 4 7 8 # of kittens What is the frequency of litters having at most 3 kittens? ans = Fe Ro 1 FEB 18 P. W MacBook Air 20 000 esc F5 F6 F2 F3 F4 F1 & ! @ 1 2 4 5 Q W R %24 # 3 6 2. Frequency
z score area between -1.425 and 1.425 find out shaded area of given data and also find probability in percentage
012 = √n1(012+d12)+n2(022+d22)/n1+n2 is I need answer within 3 minutes with my best wishes y .A Combined Standard Deviation .B Coefficient of variation
Biologists studying horseshoe crabs want to estimate the percent of crabs in a certain area that are longer than 35 centimeters. The biologists will select a random sample of crabs to measure. Which of the following is the most appropriate method to use for such an estimate? A one-sample z-interval for a population proportion A A one-sample z-interval for a sample proportion B A two-sample z-interval for a population proportion C A two-sample z-interval for a difference between population proportions D A two-sample z-interval for a difference between sample proportions

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