Suppose that 75% of college students prefer pepperoni on their pizzas. You took a sample of ?=150 at your college and found that 70% said they want pepperoni on their pizzas. You want to know if your college is different from the rest. Enter the information you need to perform a correct test at the 10% level. P0= n= X= ?=

Q: of parents of children in high school felt it was a serious problem that high school students were…

A: Three conditions:1. Random: The sample is selected randomly, the first condition is satisfied.2.…

Q: A software company is interested in improving customer satisfaction rate from the 62% currently…

A: For the given data Find test statistic =?

Q: A health psychologist wanted to test if discussing the health disparities of a patient with their…

A: given information :n=20      µ=40 ,σ=70,α=0.05 x_bar=56.7 hypothesis define: H0.u=40H1: μ not equal…

Q: A software company is interested in improving customer satisfaction rate from the 69% currently…

A: Given Hypothesized pop. proportion, p0=0.69Favorable cases,x=146Sample size,n=193Sample…

Q: Suppose that you conduct a hypothesis test for a proportion using a sample size of n=50 and you…

A: Answer: As sample increases  the p-value decreases.

Q: If the z statistic value calculated is -1.49, what is the p-value

A: Hello! Thanks for the question. There is no information about the tail of the test. We are providing…

Q: One sample has n = 6 and M = 10. A second sample has n = 4 scores with M = 15. If the two samples…

A: Combined mean = n1x1¯+n2x2¯n1+n2

Q: A software company is interested in improving customer satisfaction rate from the 60% currently…

A:

Q: A set of n = 6 scores has a mean of M = 10. Another set of scores has n = 4 and M = 20. If these two…

A: Given, First set has mean = 10 and n =6 Second set has mean = 20 and n =4

Q: A health psychologist wanted to test if discussing the health disparities of a patient with their…

A: As we are authorized to answer only 3 subparts for each question and that you haven't specified…

Q: In a class of 95 students, the heights of two students were measured and found to be 165 cm. If this…

A:

Q: Suppose you select a simple random sample of 75 Douglas College students, and you find that 8 are…

A: The point estimate of the population proportion is the sample proportion. Given that, 8 out of the…

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

A:

Q: A recent survey found that 58% of U.S. adults use their smartphones to research and shop for…

A: The expression is  The margin of error is given as 5.3%.

Q: Twenty years​ ago, 47​% of parents of children in high school felt it was a serious problem that…

A:

Q: An analysis was conducted to determine whether the average height of the 25 girls in the same class…

A: To test whether the average height of 25 girls is different from the general population of 15-year…

Q: The sports coaches at West High School believe that 12% of their students play soccer. In a sample…

A: Given that Sample size n = 155 Number of students who play soccer, X = 21 Claim : 12% of students…

Q: A sample has SS= 20 and s2 =4. How many scores are in the sample?

A:

Q: A Plitical pollster wants to know what proportion of voters think james burger should go away and…

A:

Q: A software company is interested in improving customer satisfaction rate from the 78% currently…

A: Givenp=78%=0.78x=108n=132p^=xn=108132=0.8182

Q: For a sample of 9 with a mean of 5994. How would i find the EX?

A:

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Solution: From the given information, confidence level is 0.96, p=0.54 and E=0.02.

Q: Suppose that in a large class at a major university, the instructor announces that the average grade…

A: Given information- We have given the average grade on an exam = 72 Since we know that from the…

Q: he margin of error for a 90% CI for a mean, when the sample size is 12, the sample average is 52,…

A: As the population standard deviation is known, we will use t distribution. Degrees of freedom =…

Q: A very wise teacher measured brain activity in all 20 seniors in his Statistics class in the first…

A: We have to find p value for given testing.

Q: One sample of n = 4 scores has a mean of M = 12, and a second smaple with n = 6 scores has a mean of…

A:

Q: Suppose you take a sample of 25 Reese's pieces. The proportion of orange is 0.4. What is the p-value…

A: Solution

Q: A recent survey estimated that 19 percent of all people living in a certain region regularly use…

A: The 100 (1 – α)% confidence interval provides an interval estimation of the required population…

Q: You have been hired by a consortium of local car dealers to conduct a survey about the purchases of…

A: Given: Confidence level = 95% Margin of error = 0.03 Formula Used: n = ZαMargin of error2 p(1-p)

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

A: The proportion is p0=0.52 The total number of samples n=700 The value of…

Q: Twenty years ago, 56% of parents of children in high school felt it was a serious problem that high…

A: Using the given data fill the blanks

Q: . An introductory stats professor hypothesizes that 50% of students learn best by watching the…

A: Test is that whether distribution of students is such that 50% of students learn best by watching…

Q: A state legislator wants to determine whether her performance rating (0-100) has changed from last…

A: Given: Voter Last Year This Year 1 60 56 2 54 48 3 78 70 4 84 60 5 91 85 6 25 40 7…

Q: A teacher measured brain activity in all 60 seniors in her Statistics class in the first week of…

A: The null and alternate hypothesis are H0 : μd=0HA : μd<0 where, μd is the difference of the first…

Q: Twenty years ago, 47% of parents of children in high school felt it was a serious problem that high…

A: Given that  Sample size n =900 Population proportion p=47%=0.47

Q: A software company is interested in improving customer satisfaction rate from the 77% currently…

A: Solution: Given data p = 0.77 sample size (n) = 248 x = 202 Sample Proportion is given  by; (p̂) =…

Q: what is the predicted value for the return of GM given that the S&P500 return is 5% 2 The number of…

A: The regression equation is GM^=0.005860+0.904753S$P500.

Q: The sampling plan: n = 350 and c = 1, meets a confidence-reliability of (95%, 99%) A. True or False.…

A:

Q: If the p-value of a test is 0.022. what is your decision?

A: For making conclusion about null hypothesis Ho we compare p-value and level of significance.

Q: A software company is interested in improving customer satisfaction rate from the 76% currently…

A: It is given that, A software company is interested in improving the customer satisfaction rate from…

Q: 8. Use the figure to the right, which shows the percentages of adults from several countries who…

A: Given Information: Country A: Sample size (n1) = 1003 Sample proportion (p^1) = 49% = 0.49 Country…

Q: health psychologist wanted to test if discussing the health disparities of a patient with their…

A: Here it is given that- Population mean (μ) = 40 Population standard deviation (σ) = 70 Total number…

Q: A software company is interested in improving customer satisfaction rate from the 53% currently…

A: Statistical tests are used to calculate the test statistic and p-value. This test statistic and…

Q: A magazine provided results from a poll of 1500 adults who were asked to identify their favorite…

A: The probability of people choose chocolate pie is 0.13.

Q: if the 90% Ci for the population mean is (-4.58, 6.54) what is the sample mean O a. can't be found

A: Given data,Lower limit =-4.58Upper limit =6.54Sample mean =?

Q: Determine the P-value for a test of significance with t= -2.861, n = 20 and H₁ μ< 100. a

A: The given data is t=-2.861 n=20 Ha: μ&lt;100

Q: A sample of 150 married women determined that 127 are happy in their marriage. A sample of 150…

A: As per our guidelines I can solve only first 3 subparts. Post the remaining subparts again and…

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

A: using the given data fill all the blanks required