Employer-based health insurance A report from a Gallup poll1 in 2011 started by saying, "Forty-five percent of American adults reported getting their health insurance from an employer..." Later in the article we find information on the sampling method, "a random sample of 147,291 adults, aged 18 and over, living in the US," and a sentence about the accuracy of the results, "the maximum margin of sampling error is ±1 percentage point." Use the margin of error2 to give an interval estimate for the parameter of interest. Enter the exact answers. The interval is

Q: Bacterial contamination of surgical patients can occur from bacteria that contaminate the scrub…

A: A quartile defined as a special type of quantile which divides the number of data points into four…

Q: To determine how American college students feel about commuting, 100 students at a private…

A: To determine how American college students feel about commuting, 100 students at a private…

Q: 3. For a given level of significance, if the sample size is increased, the power of the test will…

A: Here, when we take large sample size then z value will be increase. Then we will be reject the null…

Q: If the word significant is used to describe a result in a news article reporting on a study, Select…

A: When we test a hypothesis and establish a conclusion, we always use the term "statistical…

Q: The XYZ Corporation is interested in possible differences in days worked by salaried employees in…

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

Q: a) With no prior research, what sample size should you gather in order to obtain a 0.015 margin of…

A: When we don't have any prior information about the population proportion, we generally take it as…

Q: In a large high school, 18% of sophomores and 67% of seniors have part-time jobs. Suppose random…

A: From the given information we find the correct Option.

Q: Identify the type of sampling technique used by the researcher in each of the following situations.…

A: We have given the following statement about the sampling  technique.

Q: In a large high school, 18% of sophomores and 67% of seniors have part-time jobs. Suppose random…

A:

Q: As the sample size increases, what happens to the p-value associated with a given sample mean?

A: In statistics, the sample size is the no of units present in a sample that is drawn from a…

Q: For which of the following situations would a paired-sample research design be appropriate?…

A: If the two samples are independent of each other, then paired-sample research design is…

Q: The unemployment rate for 18- to 34-year-olds was reported to be 10.8% (The Cincinnati Enquirer,…

A: Let P denote the hypothesized proportion, p denote the sample proportion and n denote the sample…

Q: illustrates the effect of sample size on the power of a two-sample t test?

A: A test of hypothesis consists of 2 hypotheses: the null, H0, and the alternative, H1.   For a sample…

Q: Many elementary school students in a school district currently have ear infections.  A random sample…

A: Solution: Let p1 be the proportion of students who have ear infections at one school and p2 be the…

Q: In a simple random sample of size 76, there were 34 individuals in the category of interest. Compute…

A: Given: Sample size (n) = 76 Let x be the number of individuals in the category of interest

Q: Among the random and non-random sampling techniques that we have, which do you think is the most…

A: Random/Probability sampling is a technique in which each member of the population has an equal and…

Q: b. Alpha is 10%, the sample size is 45 and sigma is known.

A:

Q: Historically, the proportion of car parks in a particular city that offer early discount fees is…

A: a. Consider that p is population proportion of car parks in a particular city that offer early…

Q: When does sampling with replacement and sampling without replacement yield approximately the same…

A: Introduction: Sampling with replacement and sampling without replacement are two ways of conducting…

Q: What happens to the sample size when you don’t know a prior sample proportion?

A: To calculate the sample size when we do not know prior sample proportion.

Q: Two samples are randomly selected from

A: Failing to reject the Null hypothesis means accepting it and rejecting the alternative hypothesis.

Q: 6. Twenty years ago, 46% of parents of children in high school felt it was a serious problem that…

A: Z test for one proportion

Q: A parent downloads an app that allows him to monitor the amount of screen time his child is using on…

A: Introduction :-  Given :-  A parent downloads an app that allows him to monitor the amount of screen…

Q: Question 2: In a random and independent sample of 1000 students 80% of them were in favor of longer…

A: Here we need to find the standard error from the given sample proportion.

Q: Single adults: According to a Pew Research Center analysis of census data, in 2012, 20% of American…

A: Given Sample size =n=100 Population proportion p0=0.20

Q: should their sample size be?

A: here use solvin's formula

Q: Is the difference between the mean annual salaries of statisticians in Region 1 and Region 2 more…

A: Null hypothesis H0:  The difference between mean salaries of statisticians in two regions  is $8000…

Q: Participants selected 120 samples of size 3 from a population of 5 scores (0, 0, 0, 3, and 6) using…

A: Given data participants selected 120 samples of size 3 from a population of 5 scores using…

Q: In a large high school, 18% of sophomores and 67% of seniors have part-time jobs. Suppose random…

A: not approximately Normal because the expected numbers of successes and failures for the sophomores…

Q: If it is known that a town with population 30,000 had 3,170 people who drive a Prius hybrid vehicle.…

A: Solution: The proportion of population who drive a Prius hybrid vehicle is From the given…

Q: At a large corporation, 6,000 employees from department A and 4,000 employees from department B are…

A: Concept of sampling distribution of sample proportion: Let a particular characteristic of a…

Q: Packed in at Rush Hour! Sq. Ft. per standing passenger In 1990 the New York Times reported the…

A: As per honor code we will be answering only three parts.  d)  Arrange the given data in ascending…

Q: Pipes used in a water distribution network are susceptible to breakage due to a variety of factors.…

A: The sample size (n) is 12.

Q: What is the target sample size for a population of 3,500 people with a standard value of 1.65 and a…

A: Solution-; Given: N=3500, Standard value (V)=1.65,sampleing error (Se)=0.10 We find the target…

Q: what is a sampling error?

A: Description of parameter and statistic:A characteristic that describes population is called a…

Q: At a high school with over 500 students, a counselor wants to estimate the mean number of hours per…

A: Note that ,  For given random and independent samples of N observations each (taken from a normal…

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: The hypothesis tests, contain two hypothesis: null hypothesis and alternate hypothesis. The…

Q: A random sample of n1 = 299 voters registered in the state of California showed that 146 voted in…

A:

Q: (b) How many respondents total were examined in the ANOVA? ? (c) For the ANOVA test, it is assumed…

A: The results of ANOVA are given in the ANOVA table.

Q: estimate the population proportion p,what is the minimum sample size we need in order to achieve a…

A: Solution: From the given information, confidence level is 0.95, p=0.1 and E=0.01.

Q: If the sample size is decreased, then the sampling error will -- a. not change b. Increase c.…

A: The sampling error is sn.

Q: Back to school? Best known for its testing program,ACT, Inc., also compiles data on a variety of…

A:

Q: The mean of a sampling distribution is smaller than the mean of the underlying population. True or…

A: We have to find that the given statement is true or false... The mean of a sampling distribution is…

Q: What is the P(t > -0.4) with a sample size of 13.

A:

Q: Which kind of sampling plan was used in each of the following situation? Would the plan result in an…

A: There are many sampling methods to select the sample from the population.  The samples need to be…

Q: Aspen trees tend to be smaller in the highlands of the park because they are subject to strong…

A: Systematic Sampling will be used here.

Q: From a population of 300 you are going to select 50. Using the systematic sampling technique where 5…

A:

Q: The accuracy of a census report on a city in southern California was questioned by some government…

A: Given total number of people N = 1215 Census percentages for Black, Asian, Anglo, Latino, Native…

Q: Suppose the percentage of married couples who own a home is 33% for a given population. What is the…

A: From the provided information, The percentage of married couples who own a home is 33% (p) = 0.33…

Q: If you had a choice between two samples of equal size, one obtained through a simple random sampling…

A: Stratified sampling performed after dividing data into homogeneous strata.