69. a. Let a and b be constants and let y¡ = ax; + b fori = 1, 2, ..., n. What are the relationships between xand y and between s and s??rb. A sample of temperatures for initiating a certainchemical reaction yielded a sample average (°C) of87.3 and a sample standard deviation of 1.04. Whatare the sample average and standard deviation mea-sured in °F? [Hint: F = C + 32.]

a) Given that a and b are two constants. yi=axi+b i=1,2,...n The x is the sample mean and it is…

Answered: 69. a. Let a and b be constants and let…

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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16
I1. Solve the protlem caretully. sketch the curve. 1. The daily income of bank audition in 555 Commercial Eank is normally distributed with a mean ef Pho 675 and a standard deviation et Php 45. What is the: value for the income of a bank auditor who earns Pho 700 daily? 2. Johnny scored 72 in a quiz in Algebra for which the average score of the class was 65 with a standard deviation of B. He aho took a quie in Statistics and scored 60 for which the average score of the class was 45, and the standand deviation was 12 Retative to other students in the class. did Johnny do better in Algebra er Statistics?
6. A distribution with a µ = 55 and o = 6 is standardized so that the new mean and standard deviation will be u = 50 and o = 10. When the new distribution is standardized, what value will be obtained for a score of x = 52 from the original distribution? a. X= 45 b. X = 47 C. X= 52 d. X = 53
number 7 and 8 pls
For bone density scores that are nomally distributed with a mean of 0 and a standard deviation of 1, find the percentage of scores that are a. significantly high (or at least 2 standard deviations above the mean). b. significantly low (or at least 2 standard deviations below the mean). c. not significant (or less than 2 standard deviations away from the mean). a. The percentage of bone density scores that are significantly high is %. (Round to two decimal places as needed.) b. The percentage of bone density scores that are significantly low is %. (Round to two decimal places as needed.) c. The percentage of bone density scores that are not significant is (Round to two decimal places as needed.) %.
Ex. 4. The mean and standard deviation of the marks obtained by 1000 students in an examination are respectively 34.5 and 16.5. Assuming the normality of the distribution, find the approxiamte number of students expected to obtain marks between 30 and 60.
3.1. Suppose that the height of the women is a normal variable with a mean of 1.62 meters (m) and a standard deviation of 24 centimeters. Calculate the percentage of women who measures (a) more than 1.70 m. (b) between 1.66 and 1.58 m. (c) less than 1.50 m. d) between 1.60 and 1.63 m.
5.
The following is a sample of sanitation scores for 20 cruise ships. Find the mean and standard deviation of the sanitation scores. 1. The mean of the sample data is (round your answer to 2 decimal places) 2. The standard deviation of the sample data is (round your answer to 2 decimal places) 3. Calculate the intervals x¯±s,x¯±2s,x¯±3s. (Round your answer to two decimal places) A. (x¯−s , x¯+s) = B. (x¯−2s , x¯+2s) = C. (x¯−3s , x¯+3s) =
12. A population forms a normal distribution with a mean of u = 55 and a standard deviation of o = 12. For each of the following samples, compute the z-score for the sample mean. a. M = 58 for n = 4 scores %3D b. M 58 for n = 16 scores c. M = 58 for n = 36 scores
Statistic. Help me answer from 1-20 items
13. A normal distribution has a mean of u = 30 and a standard deviation of o = 12. For each of the following scores, indicate whether the body is to the right or left of the score and find the proportion of the distribution located in the body. a. X = 33 ANSWER I b. X = 18 ANSWER ! c. X = 24 ANSWER I d. X = 39

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