In a survey, 1000 respondents were asked about product preference. Of the interviewed, 65% favored a certain brand. What is the standard error in estimating the population proportion using the sample proportion?

Q: A random sample of 100 high school students was surveyed regarding their favorite subject. The…

A: State the hypotheses.

Q: A research report from an independent-measures study states that there are significant differences…

A: a)From the given information, the degrees of freedom treatment is 3.

Q: In a sample of 550 students, 80% prefer online resources versus printed materials. The standard…

A:

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

A: There are 153 out of 360 (n) elementary school children found as above grade level readers. The…

Q: 25 In a survey, 1000 respondents were asked about product preference. Of the interviewed, 65%…

A: Given data: Given proportion = 0.65 Sample size = 1000

Q: If the population mean is 12.45, what is the mean of the sampling distribution of its means?    If…

A: It is stated by the Central Limit Theorem that when the sample size is large which means it is…

Q: What is the difference between sample means and a distribution of sample proportions?

A: Given : Sample mean : Average of sample observations is known as "sample mean". Sample proportion :…

Q: Determine the test statistic and p-value for Ho: p = 0.5 versus H3: p # 0.5 wh 225 and the sample…

A: Given that  Null hypothesis (H0) : P=0.5 Alternative hypothesis (H1) : P≠0.5 Sample size (n) = 225…

Q: Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 41% of the…

A: From the given information, The sample size is 100 viewers. Among 100 viewers, 36% indicated that…

Q: From the sample statistics, find the value of p1 - p2, the point estimate of the difference of the…

A:

Q: Among 1815 randomly selected high school students surveyed by the Centers for Diseases Control, 300…

A: Given X=300 n=1815

Q: Why is a sample proportion generally used to estimate a population proportion instead of obtaining…

A: Population proportion: The proportion that is calculated from the population which has a specific…

Q: which statistic is equivalent to dividing the sum of scores equally across all members of a sample

A: The statistic measures the characteristics of samples to estimate the population.

Q: 1. Reports show that four out of five teenagers asked for a cell phone for Christmas this year. Use…

A:

Q: A survey question for a sample of 150 individuals yielded 75 Yes responses, 55 Noresponses, and 20…

A: The point estimate of the proportion of character A in the population is (No of individuals having…

Q: According the April 12, 2017 Pew Research survey, 58% of Americans approve of U.S. missile strikes…

A: Given that  58% of Americans approve of U.S. missile strikes in Syria

Q: Find the estimated standard error for the sample mean for n = 16 and SS = 3922. Nearest hundredths…

A: We find the standard error using the formula

Q: Consider the sample data: 125, 115, 112, 127, 112, 105.

A: Data set: 125, 115, 112, 127, 112, 105

Q: Find the point estimate of the true proportion of people who wear hearing aids if, in a random…

A: It is an important part in statistics . It is widely used in all statistical procedures .

Q: When comparing multiple categories from different populations, a _____________ or a _____________…

A: ANOVA :- It is used to compare the means of more than two sample from  different populations. It is…

Q: When working with the sampling distribution of a sample proportion, what do we need to require to…

A: Sampling Distribution of a Proportion There are several ways to calculate the sampling distribution…

Q: A researcher studying the proportion of 8 year old children who can ride a bike, found that 219…

A: Given: n= 567 ,x= 219.0 Need to find sample proportion.

Q: According to the following two-way table, what percent of people in the sample taken naps?   male…

A: Given, The contingency table,   Male Female Total nap 25 30 55 does not nap 35 10 45 Total…

Q: What is meant by the statement that the sample mean has a sampling distribution?

A: The parameters that describe a population, like mean, variance, and standard deviation, are already…

Q: Find the estimated standard error for the sample mean for n = 10 and SS = 3896. Nearest hundredths…

A:

Q: To assess attitudes towards issues that affect the residents of a village, the village randomly…

A: Given that there are 800 families to participate in a survey of life attitudes and 628 are completed…

Q: estimate the sample size for a population of 750 people.

A: To estimate the sample size the required calculation can be defined by the formula  Slovin's…

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: What is the value of the standard score for the sample proportion?

A: If mean if the proportion us P And standard deviation is √(pq/n) Then standard score or Z score for…

Q: Find the midrange for the given sample data.

A: Given: Time (X) 14 21 27 38 47 57 61 67 74 75 85 93 132 152

Q: When calculating the sample size for a research study, a researcher should always round the final…

A: The statement is true.

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: In a poll of 1000 randomly selected voters in a local election, 415 voters were against school bond…

A: #Ans -  Given,           In a poll of n = 1000 randomly selected voters in a local election, x = 415…

Q: What value should we expect for our sample proportion?

A: We have to answer question based on proportion.

Q: For a sample of n=16 scores, how many scores are used to calculate the sample variance?

A:

Q: A marketing company is interested in the proportion of people that will buy a particular product.…

A: We have to write the correct terms .

Q: In order to study the mean blood pressure of people in his town, Richard samples the population by…

A: We know that stratified sampling involves dividing the population into groups and randomly selecting…

Q: In a sample of 993 recent car buyers, the participants are asked to identify the most useful source…

A: The number of values corresponding to a class or observation is defined as the frequency of that…

Q: a. How many treatment conditions were compared in the study? b. What was the total number of…

A: Here it is given that, a research report from an independent-measures study states that there are…

Q: Below n is the sample size, p is the population proportion and ^p is the sample proportion.  n= 148…

A: Given, Below n is the sample size, p is the population proportion and P^ is the sample proportion.…

Q: What percent of students preferred iced tea?

A: Total number of students = (840+390+830+510+430) = 3000 Number of students who preferred iced tea =…

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: sixty-five percent of those surveyed reply No to a certain question. If 234 reply No, what is the…

A: Given 65℅ of S replied  No to a question, This number is given to be 234 so

Q: By how many times does the sample size have to be increased to decrease the margin of error by a…

A: Formula for margin of error is ME = Zα/2 * σ / √n where Zα/2 = critical value

Q: What is the symbol for the best point estimate for the true proportion? What is the symbol for the…

A: A point estimate is defined as the single value that is calculated from the sample data to estimate…

Q: How could the survey question "Have you ever had a drink of alcohol?" be revised to obtain a valid…

A: Introduction :- We are given one survey question. We have to revise these questions to obtain valid…

Q: Find the estimated standard error for the sample mean for n = 13 and SS = 3639. Nearest hundredths…

A: It is given that n = 13 and SS = 3639.

Q: Define a test procedure, based on sample data, for deciding whether to reject H0?

A: Explanation: t-test for population mean:

Q: Suppose 420 randomly selected people are surveyed to determine whether or not they subscribe to…

A: Given that, 420 randomly selected people are surveyed to determine whether or not they subscribe to…

Q: The sample mean X is a point estimate of the

A: Population is the whole set of observations that are used for study. Sample is the subset of the…