A study using two random samples found that the mean amount of time spent per week on leisure activities is shown below. At a=.05 can it be concluded that there is a significant difference in the average times each group spends on leisure activities? Let the 26-35 age group be group 1 25-35 years          46-55 years n       40                    32 xbar 39.6                  35.4 s       6.3                    5.8 Find the point estimate Find the critical value(s) Find the margin of error Construct the confidence interval

Q: hen creating a 99% CI based on data from one sample the size of n=31, which t value should be used?

A: Given: n=31 The degree of freedom=n-1=31-1=30 The level of significance (α)=0.01 We see inside the…

Q: Score: 3.5/5 4/5 answered Question 4 The following table summarizes the ages of a sample of 56…

A: Explanation:In this given the  table and find out the mean In table first finded the  class…

Q: Before every​ flight, the pilot must verify that the total weight of the load is less than the…

A: X=164μ=179.8σ=37.7n=41 The Z-score is given by, Z=X-μσ/n

Q: Table 1 Physical Activity (Mean Hours/Day Averaged over 7 Days) Activity Level M Range Sleep Light…

A: Basics: We know that Range is given by ; Range = Highest value - lowest Value

Q: f. What percent of patients have more than 80 distressing/scary thoughts a day? g. Are these data…

A: The data of 20 patients is given from which it is asked to compute the percentage of patients who…

Q: Student Student Student Student Name Address Еxam Course ID Major Mobile Subject Date Teacher Credit…

A:

Q: To test whether the mean time needed to mix a batch of material is the same for machines produced by…

A: ANOVA stands for analysis of variance. It helps to compare variances across averages of different…

Q: None

A: Step 1:To determine if there is a link between age and the number of hours spent each week playing…

Q: A fabric manufacturer employs a control chart to monitor stained fabric rolls in their production…

A: The objective is to to construct a control chart for stained rolls of fabric. Consider the number…

Q: 7. We want to test a claim that the mean house price in CA is not equal to $455000. sample : n=41,…

A: Solution : Given : - We want to test a claim that the mean house price in CA is                  not…

Q: Variable Intercept DF 1 AGRICULTURE 1 FOREST Source Model Error Lack of Fit Pure Error The REG…

A: The SAS output for the multiple linear regression is given.

Q: Earlier in this chapter (p. 67), we mentioned a researd study demonstrating that alcohol consumption…

A:

Q: A newly-designed highway sign is being examined. 27 drivers, of various ages, were tested to see at…

A: Given data: The correlation between age and distance is -0.796. To Caleulate: The intercept of the…

Q: we’ve decided to create a survey on the population of pet owners in the Bay Area ranging from…

A: Data is given We have to calculate, mean, median, standard deviation, Histogram..

Q: Below are bivariate data giving birthrate and life expectancy information for each of twelve…

A:

Q: In a research on weight of cereal dispersed into a box of cereal, a company collected m=13 sets of…

A: Upper control limit for an X-bar chart: UCLx¯=x¯¯+A2r¯ Given sub group size is n=6 From the X-bar…

Q: Mean М (a) For these data, which measures of central tendency take more than one value? Choose all…

A: Let, X: The maximum time for completion of an intelligence test. Given data is, X 21 27 32…

Q: To determine if their 1.50 centimeter bolts are properly adjusted, Norman & Mayer Manufacturing has…

A: The question is about statistical quality control.No. of periods = 10Want to calculate the upper…

Q: What is the most frequent number of over-the-limit items for this data set? ans = What is the…

A:

Q: (b) Find the P-value. Round the answer to at least four decimal places. The P-value is

A:

Q: 3) The following data visited a clinic on a particular day: A have Number of patients Waiting time…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: You receive a brochure from a large university. The brochure indicates fewer than 33 students. You…

A: Given information:

Q: Five students provided data regarding the number of hours they spent on studying (TimeStudy) and…

A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have…

Q: The accompanying summary data on total cholesterol level (mmol/l) was obtained from a sample of…

A: From the provided information,

Q: In a student survey, forty-one part-time students were asked how many courses they were taking this…

A: Total number of students = 41 Students taking one course = 12 Students taking three courses = 16

Q: A= 36 B= 09 Compute C=Min(A,B) and D=(Max(A,B)+5). Question: Take any 50 different numbers (some of…

A: Given that: A=36 B=09

Q: ome up with the 90% confidence interval for the difference.

A: Given that  A researcher surveyed 677 college men and 587 college women.  498 of the college men…

Q: Krista was looking at the Daily Mean Pressure for Leeming from May to October 1987. She used…

A: b) Arrange the given in ascending order as follows: S.No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16…

Q: Assume that a randomly selected subject is given a bone density test. Bone density test scores are…

A: Obtain the 7th percentile of the distribution.   The 7thpercentile of the distribution is obtained…

Q: From a 300 reinforcing steel bars, some were tested in terms of its tensile strength and recorded in…

A:

Q: Volume (litres) 11-20 21-30 31-40 41-50 51-60 Cumulative Frequency 24 59 101 129 150 d. For the…

A: Volumecumulative frequency11-202421-305931-4010141-5012951-60150

Q: Assuming the lowest decile of men receive an average of $800/month in Social Security, while the…

A: Introduction:Observe the “Born in 1940” curve in the given graph. The average of the lowest decile,…

Q: A paper described a study that examined whether stress accelerates aging at a cellular level. The…

A: a) Step-by-step procedure to find the regression line using Excel: In Excel sheet, enter x and y in…

Q: During tests, testosterone level is typically measured (in ng/dl, i.e. nanograms per decilitre) as…

A: Given claim: Researcher B believes that the true mean testosterone levels in male professors is…

Q: A process has a process capability ratio, C, =1.38. At some time the process seems to have a mean…

A:

Q: In the General Social Survey, respondents were asked whether they favor cuts in governmental…

A: Median is the middlemost value of the dataset that has 50% data less than or equal to it and 50%…

Q: Q2: The following data represent the weight loss in pounds of individuals on a five-week weight…

A: Note : As per the company guidelines, only three subparts can be answered at a time. Kindly,…

Q: The overall change in the consumer price index is a weighted average of changes in various…

A: Given information: The bar-graph for the changes in CPI 2010-2011 is given.

Q: a. Which species show a statistically significant reduction in mean density near heavily visited…

A: As per guidelines, we will provide answer for first three subparts only. 21) a)  The species having…

Q: A sample is selected from a normal population with a mean of µ = 40.

A: sample mean a typical, representative value for the population when sample is large and the…

Q: Thirty Asian Utility vehicles were tested for biodiesel fuel efficiency (in km/liter). The following…

A:

Q: Find the mean, mode, median and midrange. 2) Score Frequency X f ALACA 9 10 1 SACHSEE 10 12 11 11

A: Given that: X Frequency 1 1 2 5 3 4 4 7 5 6 6 9 7 10 8 12 9 11 10 11

Q: Growth Hormones B 21 A D E 15 22 10 6 18 13 20 19 24 14 11 21 15 16 17 21 13 8

A: Let treatment A be classified into k levels. To test whether k levels means are equal or not, we…