An article suggests a normal distribution with mean 136.3 oz and standard deviation 2.5 oz for the actual contents of jars of a certain type. The stated contents was 134 oz.n USE SALT(a) What is the probability that a single jar contains more than the stated contents? (Round your answer to four decimal places.)(b) Among ten randomly selected jars, what is the probability that at least eight contain more than the stated contents? (Round your answer to four decimal places.)(c) Assuming that the mean remains at 136.3, to what value would the standard deviation have to be changed so that 95% of all jars contain more than the stated contents? (Round your answer to two decimalplaces.)oz

The mean is 136.3 and the standard deviation is 2.5.

Answered: An article suggests a normal…

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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Using the information obtained above, complete the following:
For the following questions: Mean 10 and Standard Deviation of 5. Assume that the population is normally distributed. a. Calculate the z-score for a raw score of 5. What proportion of the distribution is equal to or less than this? b. Calculate the z-score for a raw score of 17. What proportion of the distribution is equal to or greater than this score? c. Determine the probability of obtaining a score that falls between a raw score of 5 and a raw score of 17.
Suppose students' exam scores are normally distributed with mean u = 65 and standard deviation O = =10 What proportion of the students taking the test score at most 80? O a) 0.07 O b) 0.95 O c) 0.14 d) 0.93 e) 0.99
You want to find the probability of getting a z score less than or equal to 1.2. Which distribution would be the best for calculating this probablity
In a sample of size 36, the sample mean was found to be 54.6. If the probability of getting a sample mean greater than 66.24 is 0.834, what is the standard deviation for sample means? O A. 72 O B. 3.464 O C. 8.485 O D. There is not enough information to find the sample standard deviation O E. 12
A standardized memory test has a mean of u = 10p and a standard deviation of ó = 10. Answer the following questions: A. What proportion of people would score below 88 on the memory test? B. What is the percentile rank for someone who scored a 116 on the memory test? C. What are the scores that separate the middle 30% (15% each side of the mean) D. What percent of individuals would score between 86 and 109?
1. The test scores of an Engineering Mechanics class with 800 students are distributed normally with a mean of 75 and a standard deviation of 7. a. What percentage of the class has a test score between 68 and 82? b. Approximately how many students have a test score between 61 and 89? c. What is the probability that a student chosen at a random has a test score between 54 and 75? d. Approximately how many students have a test score greater than or equal 96
Consider the data from the Anthropology 105 class. The mean for women is 64.33 in and the standard deviation is 2.64 in. The average height of men in the US is approximately 5ft 10in. What proportion of women represented here are shorter than the average man?
In the past Algebra classes, records show that the average score of the students in mid-term exam was computed to be equal to 83.5 with a standard deviation of 4.82. If there are 50 students in a particular class, then assuming normality of the distribution, how many of the students are expected to have a mid-term score of 1. a) above 83.5? b) below 70? c) above 90? d) between 75 -85?
What is the appropriate formula?
The population mean and standard deviation are given below. Find the indicated probability and determine whether the given sample mean would be considered unusual. For a sample of n = 31, find the probability of a sample mean being less than 12,748 or greater than 12,751 when μ = 12,748 and o=1.9. For the given sample, the probability of a sample mean being less than 12,748 or greater than 12,751 is (Round to four decimal places as needed.) C
3.The average GPA scored by a class is 4.76, and the standard deviation is 0.64. For a sample of 16 students, find the z-score that the average is above 5.0. A.0.375 B.1.5 C.0.75 D.6

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