The lengths of pregnancies in a small rural village are normally distributed with a mean of 260 days and astandard deviation of 15 days. A distribution of values is normal with a mean of 260 and a standarddeviation of 15.What percentage of pregnancies last beyond 244 days?P(X > 244 days) =Enter your answer as a percent accurate to 1 decimal place (do not enter the "*" sign). Answers obtainedusing exact z-scores or z-scores rounded to 3 decimal places are accepted.

Let X be the random variable from normal distribution with mean (μ) = 260 and standard deviation (σ)…

Answered: The lengths of pregnancies in a small…

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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Similar questions

Cereals sodium values have a mean of 167 and a standard deviation of 77.3. Find the z-score for the cereal that has a sodium value of 0. How would you interpret this z-score?
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IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What is the minimum IQ required to be able to correctly claim to be in the "top 5%" of IQ scores. Round to the nearest whole number.
A distribution of values is normal with a mean of 116.2 and a standard deviation of 60.1. Find P43, which is the score separating the bottom 43% from the top 57%. P43 = Enter your answer as a number accurate to 4 decimal places.
Round each z-score to the nearest hundredth. A data set has a mean of x = 214 and a standard deviation of 44. Find the z-score for each of the following. (a) x = 200 (b) x = 224 (c) x = 300 (d) x = 100
IQ scores of people around the world are normally distributed, with a mean of 100 and a standard deviation of 15. A genius is someone with an IQ greater than or equal to 145. What percent of the population is considered a genius? answer as a percent rounded to 2 decimal places
A distribution of values is normal with a mean of 137.5 and a standard deviation of 37.8. Find P57, which is the score separating the bottom 57% from the top 43%. P57= Enter your answer as a number accurate to 4 decimal places.
A distribution of values is normal with a mean of 246.2 and a standard deviation of 99.5. Find P78, which is the score separating the bottom 78% from the top 22%. P78 Enter your answer as a number accurate to 4 decimal places.
The scores on a standardized test normally distributed with a mean of 110 and standard deviation of 25. What score is 2.2 standard deviations above the mean?

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