A study touna that 41% of the assisted reproductive technology (ART) cycies resulted in pregnancies Twenty-eight percent of the ART pregnancies esuted in mutple tirms(a) Find the probability that a random selected ART cycle tesulted in a pregnancy and produced a multiple birth(b) Find the probatility that a randomly selected ART cycle that resuted in a pregnancy did not produce a mutipie birth(C) Would it be unusual for a randomy selected ART cycle to resut in a pregnancy and produce a mutiple birth? Explain(a) The probabilty that a randomly selected ART cycle resuted in a pregnancy and produced a multiple tirm(Round to the nearest thousandth as needed.)

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Answered: A study tound that 41% of the assisted…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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5.96 A management consultant found that the amount of time per day spent by executives performing tasks that could be done equally well by subordinates fol- lowed a normal distribution with a mean of 2.4 hours. It was also found that 10% of executives spent over 3.5 hours per day on tasks of this type. For a random sample of 400 executives, find the probability that more than 80 spend more than 3 hours per day on tasks of this type.
The time to complete the Advanced Placement (AP) Statistics Exam in previous years is normally distributed with an average time of 2.4 hours. Because of school closures due to COVID-19, the College Board offered an at-home test for the 2020 AP Statistics Exam. A teacher feels that students, on average, will have a different completion time for the at-home exam. They take a random sample of 25 students that took the exam and their mean time was 2.74 hours with a standard deviation of 0.25 hours. Test to see if the mean time has significantly changed using a 5% level of significance. Give answers to at least 4 decimal places. What are the correct hypotheses? Ho: M H₁: P Based on the hypotheses, find the following: Test Statistic t = Critical-Value t = ± 2.4 #v 2.4 o hours hours
A student wants to see if the number of times a book has been checked out of the library in the past year and the number of pages in the book are related. She guesses that the number of times a book has been checked out of the library in the past year will be a predictor of the number of pages it has. She randomly sampled 15 books from the library, test her claim at a 0.05 level of significance. number of times checked out number of pages 13 223 45 350 49 377 30 371 3 343 7 280 17 218 7 265 20 382 23 287 1 313 30 388 20 358 2 311 40 421 The correlation coefficient: r= (round to 3 decimal places) The equation y=a+bx is: (round to 3 decimal places) y=+ x The hypotheses are: H0:ρ=0H0:ρ=0 (no linear relationship)HA:ρ≠0HA:ρ≠0 (linear relationship) (claim) Since αα is 0.05 the critical value is -2.16 and 2.16 The test value is: (round to 3 decimal places) The p-value is: (round to 3 decimal places) The decision is to reject H0H0 do not reject…
Scores obtained by students in three sections of the Medical College AdmissionTest (MCAT) are independently normally distributed with means 10, 12, and 10and standard deviations 2.6, 1.2, and 1.3, respectively. Determine the probabilitydistribution of the total scores obtained by these students. NOTE: Please explain each part, so the problem can be used as a Study Guide
Most hospitals now have signs posted everywhere banning cell phone use. These bans originate from studies on earlier versions of cell phones. In one such experiment, out of 510 tests with cell phones operating at near-maximum power, 160 disrupted a piece of medical equipment enough to hinder interpretation of data or cause equipment to malfunction. Test whether this estimate is different from random chance What is H0, HA, Test statistic?
The manager of a computer retail store is concerned that his suppliers have been giving him laptop with lower than average quality. His research shows that replacement times for the model laptop of concern are normally distributed with a mean of 3.6 years and a standard deviation of 0.5 years. He then randomly selects records on 44 laptop sold in the past and finds that the mean replacement time is 3.4 years. Find the probability that 44 randomly selected laptops will have a mean replacement time of 3.4 years or less. b] Based on the result, above does it appear that the computer store has been given laptops of lower than average quality C} Please also do explain how to solve using Excel
A publisher reports that79%of their readers own a personal computer. A marketing executivewants to test the claim that the percentage is actually more than the reported percentage. A randomsample of 100 found that89%of the readers owned a personal computer. Is there sufficient evidence atthe 0.02 level to support the executive’s claim?
The weight of anodized reciprocating pistons produced by Brown Company follows a normal distribution with mean 10 pounds and standard deviation 0.2 pounds. The heaviest 2.5% of the pistons produced are rejected as overweight. What is the probability that of 10 randomly chosen pistons at least 2 have weight larger than 10.392?
The time to complete the Advanced Placement (AP) Statistics Exam in previous years is normally distributed with an average time of 2.6 hours. Because of school closures due to COVID-19, the College Board offered an at-home test for the 2020 AP Statistics Exam. A teacher feels that students, on average, will have a different completion time for the at-home exam. They take a random sample of 26 students that took the exam and their mean time was 2.73 hours with a standard deviation of 0.25 hours. Test to see if the mean time has significantly changed using a 5% level of significance. Give answers to at least 4 decimal places. What are the correct hypotheses? Ho: Select an answer ✓ H₁: Select an answer ✓ Test Statistic t = ? ✓ Critical-Value t = ± ? ✓ hours Based on the hypotheses, find the following: hours Shade the sampling distribution curve with the correct critical value(s) and shade the critical regions. The arrows can only be dragged to t-scores that are accurate to 1 place after…
A report on egg consumption shows that people living in China eat an average of 196 eggs each year with a standard deviation of 18.3 eggs. If a group of 81 Chinese people are selected at random, what is the probability that the average egg consumption of this group will be more than 200 eggs?
10
A management consultant found that the amount of time per day spent by executives performing tasks that could be done equally well by subordinates followed a normal distribution with a mean of 2.4 hours. It was also found that 10% of executives spent over 3.5 hours per day on tasks of this type. For a random sample of 400 executives, find the probability that more than 80 spend more than 3 hours per day on tasks of this type.

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