Find the sample size needed to estimate the percentage of residents of one region of a country who are left-handed. Use a margin of error of one percentage point, and use a confidence level of 90%. Complete parts (a) through (c) below. a. Assume that p and ĝ are unknown. The sample size needed is (Round up to the nearest whole number as needed.)

Q: From a sample of 101 items, 27 are defective. The point estimate of the population proportion…

A:

Q: FIND THE MEAN OF THE SET OF DATA BELOW AND CONSTRUCT A SAMPLING DISTRIBUTION BY SELECTING 3 SAMPLES…

A: Mean of the set of Data: Mean=Sum of the valuestotal=7+10+14+17+205=685=13.6

Q: nple of size 9, degrees of freedom is equal to

A: The degrees of freedom can be calculated as:  DF = n-1 Here, n = sample size

Q: 1. N = 10, 000 and e = 1% %3D 2. N = 15, 000 and e = 5% 3. N = 30, 000 and e = 10% %3D

A: Given : N : Population size e : Margin of error 1. N = 10,000 and e = 1% = 0.01 2. N = 15,000 and e…

Q: Consider the following: at Bernhardt College, 200 (of the 3,000) students were polled and asked how…

A: From the given information, At Bernhardt College, 200 (of the 3,000) students were polled and asked…

Q: Find teh range for the following sample data: X: 24 20 15 34 28

A: A sample data set is given.

Q: 2. Consider the following sample data: A.) Calculate the mean. 3 24 30 47 23 B.) Calculate the…

A:

Q: 2. Let sample proportion . How large a sample should be taken to be 95 % sure that the error of…

A: As per our guidelines we are supposed to answer only one question per post. Given that, margin of…

Q: Find the required sample size, n, if c=0.89, E=0.05, and  is unknown.

A: Solution: Given, c=0.89 E=0.05 Proportion is unknown. The critical value for zα/2 =1.598 using Excel…

Q: 2. Let sample proportion . How large a sample should be taken to be 95 % sure that the error of…

A: Let proportion be p=0.50 E=0.02 z-value at 95% confidence is Zc=1.96 n=?

Q: I want to estimate the proportion of college professors who believe in aliens. How many college…

A: It is given that margin of error (E) is 0.05 and the confidence level is 0.95.

Q: A poll in Canada states that 67% of all respondents favor imposing the death penalty. The poll was…

A: Given that - A poll in Canada states that 67% of all respondents favor imposing the death penalty.…

Q: Given the population size with a corresponding margin of error, determine the sample size of each of…

A:

Q: Calculate the sample size from the following information:  E = 0.5, a= 5, c = 0.95

A: Solution-: Given: σ=5,M.E.=E=0.5,c=0.95 We find sample size, n=?

Q: Find sample size CI=75% E=3.61 Stand. dev.=6.78

A:

Q: Solve for the sample size: Determine the sample size necessary to estimate the proportion of people…

A: The random variable time spent on shopping follows normal distribution. We have to find the sample…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Given P=24%= 0.24 than q= 1-p =0.76 Confidence =99.9 % Estimate = 5%= 0.05  We have to calculate n

Q: Calculate the mode of the following sample data set: 8 10 7 14 53 22 5 5 5 22

A: Given data is 8,10,7,14,53,22,5,5,5,22

Q: Given the population size with a corresponding margin of error, determine the sample size of each of…

A: Solution-: Given: N=3050,e=0.01 (or 1%) We determine the sample sample size (n)=?

Q: Given p = 0.6, q = 0.4 and o. = 0.006. Determine sample size from the given data. %3D %3D

A:

Q: Why does this a situation call for a matched-pairs analysis?

A: Test is that whether there is difference between the measurements.

Q: a. Find the three quartiles. Q1 = Q2 = Q3 = (Type integers or decimals. Do not round.) b. Choose the…

A: a. The first quartile can be obtained using the excel formula “=QUARTILE.EXC(A1:A23,1)”. The first…

Q: d. Draw the dot plot for the sample means obtained in part (b) and makes comment.

A:

Q: Step 2 of 2 :  Given the following parameters for a sampling distribution of sample proportions,…

A: We have given that,  Favorable cases (X) = 152 and sample size    (N) = 200 and population…

Q: The City of Long Beach experienced many crashes involving bicyclists in one location. Bike lanes…

A: The null and alternative hypothesis are given as-Null hypothesis: There is no difference in number…

Q: Consider the following data                                   -3, 2, 0, 1, -2, 4, 5 a) Find shape…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: If the sample size is n=16 what is likely true about the shape of the population?

A: Solution:  Central limit theorem: The central limit theorem state that as the sample size increases…

Q: We would like to determine the average height of the overall student body at Michigan State…

A: Yes, It is necessary to take a sample from the overall student body.

Q: Determine the sample size needed to estimate  for the given situation. E = 4,  = 35, (1 - ) = .90…

A:

Q: idence level=95% idence level= 99%

A: We have to find sample size required for given ci.

Q: The ethnicity group of the subjects in the experiment is an example of scale: a. interval O b. ratio…

A: Solution-: Q.2 Ans: Here we find ethnicity group of the subjects is an example of which type of…

Q: should their sample size be?

A: here use solvin's formula

Q: A researcher gathered from historical papers that the proportion for the success of an event was…

A:

Q: ample size always be 4, 5 or 6 -no smaller nd no larger? nswers to Conceptual Questions

A: It is an important part of statistics. It is widely used.

Q: Given: population = 15,000 error level = 0.05 compute for the sample size, show solution, do not…

A: Given information: N=15000E=0.05

Q: A study title “Teacher Involvement and School Environment in Slow Learner Learning”. State the four…

A: measurement of quantitative data is very easy but measurement of qualitative data requires different…

Q: Identify the sample size from the histogram: 18 16 16 14 13 12 10 100 140 180 220 260 300 Weights 21…

A: We have given the histogram.

Q: Draw all possible samples of size 2 WITH REPLACEMENT from a population consisting of 3, 4, 6, 8, and…

A: Population consists of 3, 4, 6, 8, and 9.The objective is to draw all possible samples of size 2…