If n = 200 and p (p-hat) = 0.65, construct a 95% confidence interval. Give your answers to three decimals

Q: A teacher wanted to know how well the gifted studentsin here class perform relative to her other…

A: Given  Hypothesis  Ho: mu=50 vs H1: mu> 50 n=31, Xbar=55, sigma= 10

Q: A study of all widgets from a factory showed the mean age of widgets to be 22.2 years with a…

A: A parameter is a descriptive measure that is calculated for the entire population. Generally, we…

Q: Suppose we know that a confidence interval is (-.735, .125). Find the sample mean and the error…

A: Ans- Given,     a confidence interval is (-.735, .125). Find  the sample mean and the error bound.

Q: Determine the 80% confidence interval estimate for the population mean of a normal distribution…

A: given data n = 144x¯ = 1500σ = 11180% ci for μ = ?

Q: Sales team of a New Ventures Company is in the process of introducing a new product. As an initial…

A: We want to find the sample size.

Q: A study found that for a sample of cars traveling on Interstate 70, the average speed was 70 mph…

A: We have to find margin of error.

Q: A random survey of 70 male sophomores showed 16 preferred off campus living and out of 63 female…

A:

Q: he effects of mentoring on intelligence scores. He wanted to know as a baseline what the averag

A: mean(μ)=100standard deviation(σ)=16  n=50    let X~N(100,16)

Q: Juan is in his first semester at a university and is taking a calculus course with a large…

A: given data  mean of exam (μ) = 83standard deviation (σ) = 9for juan score(x) = 57Z score =?

Q: Many high school students take either the SAT or the ACT. However, some students take both. Data…

A: For ACT:n = 100 = 20 = 5For SAT:n = 100 = 920 = 170Also, the correlation coefficient between SAT and…

Q: We randomly sample 300 people in a specific town. 96 of them like cats. Based on this, construct a…

A: The provided information are: Sample size=n=300 Number of favroable cases==x=96 to Construct the 95%…

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 300…

A: It is given that sample size (n) is 300 and x is 15.

Q: Suppose you have a test with a mean of 66 and a standard deviation of 5. If you first increase…

A: Given Mean =66 Standard deviation=5

Q: Student A and B are enrolled in two separate math classes. The scores of the two classes have…

A: From the provided information, The z score of student A = 1.90 The z score of student B = 2.80

Q: You recently sent out a survey to determine if the percentage of adults who use social media has…

A: a)Suppose p is the true population proportion of all adults who use social media.In a random sample…

Q: The following is a frequency distribution of examination marks. Class interval Frequency 90-99 1…

A: Given data is appropriate for measures of central tendency to find central value for the given data.…

Q: Find the confidence level if the n = 25 and χ^2right = 33.20.

A: Given Data; χ^2right = 33.20. n=25

Q: A Fair Isaac Corporation (FICO) score is used by credit agencies such as banks to determine whether…

A: The claim is that the mean FICO score of high income earners in California is at most 592, the mean…

Q: A new study wants to update the proportion of adults with high blood pressure to observe how it has…

A:

Q: What will happen other things being equal if you increase the confidence level for a given…

A: The objective of the question is to understand the impact of increasing the confidence level on the…

Q: A recent study of 85 workers found that 61 people rode the bus to work each day. Find the 95%…

A: Given that  A recent study of 85 workers found that 61 people rode the bus to work each day. Find…

Q: Dr. Smith is investigating whether squeezing a stress ball throughout the day improves job…

A: μ=45, n=100, x̄=50,

Q: A History professor at a local community college wants to estimate the percent of college students…

A: It is given that sample size (n) is 300 and x is 261.

Q: Describe one-tailed p-values.

A: The choice of a specific value of the level of significance is completely subjective and hence the…

Q: You are testing the claim that the proportion of men who own cats is smaller than the proportion of…

A: As per our company guidelines we are supposed to answer only first question. Kindly repost other…

Q: how would i do 19 b with a 95% confidence interval***** not 90%

A: Given Information B) Sample Mean(M) = 77.2 Sample Standard Deviation = 5.7 Sample size(n) = 9…

Q: You want to get a 95% confidence interval for the difference between the percentage of females with…

A:

Q: A sample of 175 U.S. adults is composed of 100 women and 75 men. What is the estimate of the true…

A: Given problem Given that

Q: please help me review for my test thank you

A: Next, we look up these Z-scores in the standard normal distribution table.The area to the left of…

Q: A recent survey of 120 individuals revealed that 50 thought they were worse off financially than a…

A: Given,n=120x=50α=1-0.90=0.1α2=0.05Z0.05=1.645

Q: A motorcycle dealer with the "Hd" brand wants to know the percentage of students in the city "X" who…

A: We have to find confidence interval.

Q: Assume that adults have IQ scores that are normally distributed with a mean of u = 105 and a…

A: Given,mean(μ)=105standard deviation(σ)=20

Q: one math class, the first exam had an average score of 81.2% with a standard deviation of 10.9%. The…

A: a) There were more students on exam 1 that had a score close to the average score.  The statement is…

Q: A poll showed that 385 out of 700 adults said they would be interested in traveling to outer space…

A: This question requires accurate results, Hence I will use excel to solve this question.…

Q: A certain psychological test measures empathy and emotional intelligence. The mean and standard…

A: Given that A certain psychological test measures empathy and emotional intelligence. The mean and…

Q: Out of of a sample of 500 families, 205 had children under the age of 18 living in the home. Based…

A: 95% confidence interval for true population:     0.3669 < p < 0.4531Explanation:

Q: The first statistics exam had a mean of 71 and a standard deviation of 11 points; the second had a…

A: Given Mean =71 Standard deviation=11

Q: The confidence interval for a population mean is (7.32, 7.52). What are the sample mean and the…

A: given data, the confidence interval for a population mean is (7.32,7.52)sample mean and margin of…

Q: Nearly one-half of Americans ages 25 to 29 are unmarried. How large a sample is necessary to…

A: The provided information is The margin of error is E=0.02 α=0.05 The critical value is zc=1.96…

Q: Linda is in her first semester at a university and is taking a calculus course with a large…

A: