Find the minimum sample size n needed to estimate u for the given values of c, o, and E.c= 0.90, o = 8.8, and E= 2Assume that a preliminary sample has at least 30 members.(Round up to the nearest whole number.)

We need to find , the minimum sample size n needed to estimate μ for the given values of c, σ and E.…

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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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Consider the following population of ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. a. Find 3 random samples of the five digits from the list. Record the elements of each sample. b. find the arithmetic average of each sample. (Hint: to find the average, sum the data enteries and divide the sum by the number of enteries in the sample.) there is a line over each of these x1 = x2= x3= c. comment on how your results compare with the average of the entire population.
3. Can SAT scores predict college performance? Let x be a variable that represents SAT score of a computer science major, and let y be a variable that represents a student’s GPA upon graduation. A random sample of n =15 computer science majors provided their SAT scores and GPAs: x 1232 1070 1086 1287 1130 1048 1121 1095 1135 1208 1333 1160 1186 1243 1261 y 3.52 2.91 2.4 3.47 3.47 2.37 2.4 2.24 3.02 3.32 3.59 2.54 3.19 3.71 3.58 The scatter diagram for the SAT score and GPA is given below: (a) Find the sample correlation coefficient r. Truncate to two decimal places. What does the value tell you about the data? (b) Find the equation of the least squares line . Truncate to four decimal places. What does the slope mean? (c) Find the value of the coefficient of determination . Truncate to two decimal places. What does this number mean? (d) What is the predicted GPA if a computer science major got a…
Consider the idea of a sampling distribution in the case of a very small sample from a very small population. The population is 10 students in a certain class: Student 1 3 4 6. 7 8 9. Weight 136 99 118 129 125 170 130 128 120 147 The mean weight in pounds u in this population is the parameter of interest. la) Finish filling in the frequency distribution table: Counts (Frequency) 90-109.9 1 110-129.9 130-149.9 150-169.9 170-179.9 Total: 10 1b) Find the population mean u.
Consider the following information. Sample 1 19 11 9 14 Sample 2 15 14 7 11 Calculate the differences, d,. (Use Sample 1 Sample 2.) Sample 1 19 11 9. 14 Sample 2 15 14 11 d; Calculate the values for d and s. (Round your answer for s, to three decimal places.) II
A population consists of the following N= 6 scores: 0, 4, 6, 1, 3, and 5. Compute u and o for the population. Find the z-score for each score in the population. Transform the original population into a new population of N=6 scores with µ = 50 and o = 10.
2. Find the 99% and 95% CIs for each of the following samples: a. X = 15, N = 17, s = 5 b. EX = 240, N = 40, s = 1.6 c. N = 170, EX = 1,445, EX? = 12,343.25 %3D %3D %3D %3D
Suppose a certain retailer sells several models of refrigerators. A random sample of the models sold by this retailer and their corresponding cubic feet (cu. ft.) and list price can be found below. Model Model 1 Model 2 Model 31 with Thru-the-Door Ice and Water. Model 4 Model 5 Model 6 with Thru-the-Door Ice and Water Model 7 Model 8. Model 9 with Thru-the-Door Ice and Water Model 10 with Thru-the-Door Ice and Water Model 11 with Thru-the-Door Ice and Water Model 12. Model 13 with Thru-the-Door Ice and Water Model 14 Model 14 Model 15 Model 16 with Thru-the-Door Ice and Water Model 17 Model 18 with Thru-the-Door Ice and Water Model 19 with Thru-the-Door Ice and Water Model 20 with Thru-the-Door Ice and Water Model 21 Cu.Ft. List Price 18.3 Ho: B₂ 20 H₂: B₁ 0 ⒸH₁: B₁ = 0 H₂: P₁0 24.8 25.4 19.3 17.3 19.6 25.0 25.4 26.0 25.6 18.0 25.0 20.2 24.5 $1,299.99 20.2 15.5 28.2 27.8 $899.99 23.6 $1,799.99 $1,799.99 $749.99 $599.99 $1,619.99 $999.99 $1,299.99 $1,299.99 $1,099.99 $679.99 $2,199.99…
6. Given the following sample of n = 10 scores, for each individual score calculate the following: a) z-score b) a new standardized score with M = 50 and s = 20 X 19 10 2 16 13 4 11 6 18 15 X 19 10 2 6341618 15 z-score Standardized Score

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Find the minimum sample size n needed to estimate u for the given values of c, o, and E. c= 0.90, o = 8.8, and E = 2 Assume that a preliminary sample has at least 30 members. (Round up to the nearest whole number.)