In order to have a margin of error of 2%, people should be surveyed.

Q: 2. A birthday party host planned for 20 people, but 17 actually attended. What is the percent error?

A: Given that a birthday party host planned for 20 people, but 17 actually attend. From these data it…

Q: Out of 300 students in the school, 225 passed an exam. What would be the mean of the sampling…

A:

Q: Your professor wishes to estimate the proportion of high school students enrolled in college-level…

A: Given: margin of error of 3.5 percent 99% confidenp p= 18.3%

Q: How does the cost of shipping a standard-sized crate relate to the distance of the destination? Can…

A: distance charges 14 1400 23 2000 9 800 17 1600 10 1620 22 1900 5 620 12 1440 6 900…

Q: Compare the married and divorced groups in the very happy category with reference to their…

A: Given: A: Married people B: Divorced people X: Very Happy people XA=600  nA=1413     XB=93  nB=485…

Q: If the proportion of H’s is .45 out of 200 flips, what is the p-value?

A:

Q: When 3,011 adults were surveyed in a Pew Research Center poll, 73% said that they use the internet.…

A: Given Information: n = 3011 ¾ of all adults use the internet (p)  = 75% = 0.75   = 73% = 0.73 Step…

Q: If the distribution is approximately mound-shaped, what is the proportion less than 80.12 ? 15

A: Find the value of z using mean and standard deviation.

Q: A researcher wants to find out the number of students he needs to urvey in a school provided that…

A: Given : total no pf students in a school  N=5000 with margin of error e=5%  To find sample size…

Q: Suppose r is .84, compute proportion of variation is explained?

A: From the given information, it is observed that r=0.84.

Q: What is the estimate of the common population proportion?

A: To find: The estimate of common population proportion

Q: What percentage of scores would be above 567?

A:

Q: What are the steps for Finding Proportions for One Score?

A:

Q: In a recent study, 46% of people enjoy country music.  If 200 people are surveyed about their…

A: Given : Proportion (prop.) of people enjoy country music p = 46% = 0.46 Sample size of people n =…

Q: Will, an art student, randomly sampled oil paintings in a museum. He wanted to find out how many oil…

A: Given :  Margin of Error  (E) = 0.02 The proportion of paintings that were created using the color…

Q: In a survey of 1200 workers, 35% said they eat at home during a typical work week. What is the…

A:

Q: A birthday party host plan for 20 people, but 17 actually attended. What is the percent error?

A:

Q: range, as a measure of spread, has the disadvantage of being influenced by outliers. Illustrate

A: Range is defined as the difference between the highest and lowest observation of a data set.…

Q: Is it more likely to hit the area in white or blue and by how much?

A: The area of the square is= 18×18=324  square inch The radius of the circle is= 2+3+3=8 inches So the…

Q: When 410 college students were surveyed,150 said they own their car. Find a point estimate for p…

A: Given Data: The number of college student was surveyed is: n=410 The number of a student owning…

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: If the proportion of Heads is .45 out of 200 flips, what is the p-value?

A: The proportion of Heads is .45 out of 200 flips.

Q: I want to be sure to obtain a margin of error of ±5 % in a poll asking whether people support…

A: Given information: Margin of Error=+/-5%=0.05 Let level of significance=0.05 Let the proportion of…

Q: The measure of location which Is highly affected by outllers is

A: Range: Range is the difference between highest value and lowest value   Range=Highest value-Lowest…

Q: What does the test of a single proportion entail?

A: The One-Sample Proportion Test is used to assess whether a population proportion (P1) is…

Q: a pollster plans to improve survey results by only conducting polls in which the margin of error is…

A:

Q: Does it make sense ? Why or why not? A pollster plans to improve survey results by only conducting…

A: A pollster plans to improve survey results by conducting polls in which the margin of error is zero.

Q: What percentage of people are men who like movies?

A:

Q: What is the margin of error for a poll with a sample size of 2000 people? Round your answer to the…

A:

Q: A group of researchers want to investigate the academic performance of the college students in…

A: Given that, N = 12000 Margin of error (e) = 0.05 The formula for calculating the sample size is,

Q: What is the margin of error for a poll with a sample size of 1450 people? If you round the answer to…

A: We know that   Margin of error  for a pole with n people is given by   Margin of error=±100n

Q: Use the data and the correct formula to find the margin of error for estimating a population…

A: Given: n = 100 x = 45 sample proportion = x / n = 45/100 =0.45 95% level of confidence  Level of…

Q: On a placement examination, Rick scored lower than 1228 of the 12,730 students who took the exam.…

A:

Q: What is the difference between a score/category’s frequency and its relative frequency (proportion)?

A:

Q: An entertainment company surveyed 360 elementary school children and found that 153 of them were…

A:

Q: If the proportion of Heads is .25 out of 200 flips, what is the p-value? Round to three places.

A: Given : The proportion of Heads is .25 out of 200 flips.

Q: A poll found that 70 people out of a survey of size 127 watch at least three hours of TV per day…

A: Given  sample size n = 127 X : Number of people watch tv at least three hour per day X = 70

Q: If the proportion of Hs is .45 out of 200 flips, what is the p-value?

A: Solution-: Given : We find p-value=?

Q: what percentage of the women did not work?

A: men women total work 15 23 80 not work 23 28 51 total 38 93 131 percentage of the women…

Q: Find out if illiteracy and criminality are associated or independent by using the Proportion Method.

A: The given data can be described as   Criminal  Not criminal Total Literates 8 (AB) 707 (Aβ) 715…

Q: Suppose that the result of a public opinion poll shows that just 10% of people would be willing to…

A:

Q: What does the margin of error for the estimate of a population proportion tell you?

A: The formula for margin of error can be written as:

Q: A principal of a college wants to estimate the proportion of smokers among his students. What

A: Given : Margin of error, E = 10% = 0.10 Sample proportion = 0.30

Q: What is the percent of people who are left handed? (Round to the nearest whole percent) Gender…

A:

Q: If the proportion of Hs is .45 out of 50 flips, what is the p-value? Round to three places.

A: We have given that Sample proportion =0.45 Sample size (n)=50 flips  Population proportion p=0.5…

Q: What are the steps for Finding Proportions beyond Two Scores?

A: Z-score: Z-score shows how far a score is away from the mean or it shows how standard deviation away…

Q: What is the sample proportion

A: Claim: More than half of the population believes that passwords should be replaced with biometric…

Q: On a quick survey, respondents had to pick their favorite dessert from ice cream, cake, chocolate,…

A: Fraction of respondents pick ice-cream=25Fraction of respondents pick chocolate=13Fraction of…

Q: What is the percentage of players whose age is less than 32?

A: here given  mean = 33 year  standard deviation  =  2 year x= retirement age

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.