n a recent poll, 230 people were asked if they liked dogs, and 70% said they did. Find the margin of error of this poll, at the 90% confidence level.

Q: Answer the next 2 questions using the following information. The US Department of Energy reported…

A: The hypotheses can be constructed as: Null hypothesis: H0: p = 0.517 Alternative hypothesis: H1: p ≠…

Q: The town of Butler, Nebraska, decided to give a teacher-competency exam and defined the passing…

A: Here we have to explain the given statement

Q: In a large data set, the 49th percentile is 523 and the 71st percentile is 675.  About what…

A:

Q: Belief in Haunted Places A random sample of 280 college students were asked if they believed that…

A: Answer below

Q: Make up another set of six scores that are not all the same but in which the mean, median and mode…

A: It is needed to obtain a set of six scores.

Q: those polled answered the economy. Construct a 93% confidence interval for the proportion of voters…

A: It is given that, the sample size, i..e, the sampled no. of voters, .The no. of voters, who answered…

Q: A magazine provided results from a poll of 1000 adults who were asked to identify their favorite…

A: Confidence level : 90 % = 0.9 value of alpha = 1 - 0.9 = 0.1

Q: A survey was conducted that asked 1018 people how many books they had read in the past year. Results…

A: Since population standard deviation is unknown, use t-distribution to find t-critical value. Find…

Q: Last year over 13,000 students took an entrance exam at a certain state university. Yoko's score was…

A: Given: 13000 students Yoko's score = 68th percentile Pablo's score = 42nd percentile

Q: A data set has five values. The 45th and the 55th percentile are both 25. The largest value is 125,…

A: We have to given that,   data set has 5 values i.e. n=5 and 45th percentile = 55th percentile = 25…

Q: Miller Junior High is considering changing its school colors.  The results of a survey that 16 out…

A: Topic : unitary method

Q: A simple random sample of 28 observations was taken from a large population. The sample mean equaled…

A: It is given that, a simple random sample of 28 observations was taken from a large population with…

Q: fragrance free laundry soap.

A: To test the percentage of customers who prefer fragrance free laundry soap.   This can be done using…

Q: The mean score on a set of 17 tests is 85. Suppose two more students take the test and score 62 and…

A: we need to find new mean using given conditions

Q: Social Survey is an annual survey given to about 1500 U.S. adults selected at random. A recent…

A:

Q: How many people should be surveyed to construct a 95% confidence interval with error = 3% to…

A: Given that Margin of error, E = 0.03 Population proportion, p = 0.15 Level of confidence = 95%

Q: student scored in the 75th percentile on the SAT. What does that mean?

A:

Q: Melissa got a score of 55 which is equivalent to 70th percentile in a mathematics test. Which of the…

A: Given problem Given that   Melissa got a score of 55 which is equivalent to 70th percentile in a…

Q: CO LO Translate Mikayla and April began arguing about who did better on their tests, but they…

A: Solution The one who have a  higher  score did better.

Q: Before you took this course, you probably heard many stories about Statistics courses. Oftentimes…

A: Given :

Q: 5 points on his st. The mean was 70 standard deviation atively better on thein

A:

Q: An article a Florida newspaper reported on the topics that teenagers most want to discuss with their…

A: From the provided information, Sample size (n) = 502 37% would like to talk about school that is…

Q: There were 5 members of a basketball team, who had a mean score of 12 points each per game. One of…

A: Given, There were 5 members of basketball team then mean score is 12 points. One member left team…

Q: A researcher wants to do a study to see what the proportion of vaccinated people is in a certain…

A:

Q: Construct the 99% confidence interval for the difference when 3-47688, -318.32, -42.11, -2680, -19,…

A: Test hypothesisNull Hypothesis H0: μ1=μ2Alternative Hypothesis Ha: μ1≠μ2For group 1 Sample size…

Q: m has a mean score of 79 on the first three tests in class. What is the highest grade Tom can get if…

A: It's the same as if he had made exacly 65 on the first three tests. He will make the highest grade…

Q: If the mean of a data set is 22 and the SD is 5, what % of the values fall between 12 and 27? Give a…

A: given that  mean of a data set is 22

Q: Use the sample data and confidence level given below to complete parts​ (a) through​ (d). A…

A: Solution: From the given information, x=548 and n=931.

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll,…

A: Given data n=1026 x=520 confidence interval=95%

Q: Suppose that the mean score of a class of 34 students was 78. The 17 male students in the class had…

A: The mean score of class of 34 students was 78.

Q: A survey was conducted that asked 1013 people how many books they had read in the past year. Results…

A: The summary of statistics is, x¯=10.3,s=16.6,n=1013 The degree of freedom is, df =n -1      = 1013-1…

Q: The mean score on a set of 17 tests is 82. Suppose two more students take the test and score 66 and…

A: The objective of this question is to find the new mean score after two more students take the test…

Q: Most adults would erase all of their personal information online if they could. A software firm…

A: The sample size is 502. The probability of successes is 0.65. We have to find the value of the test…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.