In a survey of 3335 adults, 1429 say they have started paying bills online in the last year. Construct a 99% confidence interval for the population proportion. Interpret the results. *** A 99% confidence interval for the population proportion is (Round to three decimal places as needed.)

Q: Statistics students in Oxnard College sampled 11 textbooks in the Condor bookstore and recorded the…

A: Number of Pages, X Cost, Y 715 49.75 644 34.2 705 37.25 983 63.15 807 43.35 625 32.25…

Q: a. Cost = $ c. Profit = $ b. Expenses = $ d. Selling Price = $

A: a. Cost = Selling Price + Discount Selling Price = $170 Discount = 10% of $170 = 0.10 x $170 = $17…

Q: A researcher is interested in seeing if negative political ads against an opponent (group one) are…

A: Sample mean (x̅1) = 7.07Sample mean (x̅2) = 9.44Sample size (n1) = 20Sample size (n2) = 20Standard…

Q: A single sample T-test is to be done on a study about typhoons. Many believe that the average number…

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

Q: many people where diagnosed with type 2 diaabtes over the past decade.  please help me Contruct A…

A: Given Information: Given data on people who were diagnosed with type 2 diabetes over the past…

Q: When one unit of pesticide is applied to a crop of tomatoes, there is a 50% chance that 50% of the…

A: The value of statistical life (VSL) is a measure used in economics to represent the value that…

Q: When women were finally allowed to become pilots of fighter jets, engineers needed to redesign the…

A: Mean(μ)=163Standard deviation(σ)=44

Q: Assume that a sample is used to estimate a population proportion (p). Find the margin of error…

A: Answer: From the given data, Sample size(n) = 372 X = 189 99% confidence interval,

Q: Use the standard normal distribution or the t-distribution to construct a 95% confidence interval…

A:

Q: approximation to the binomial distribution and assume a 0.05 significance level to complete parts…

A: Sample size n =294 Favorable cases x =27 Sample proportion p^=x/n  =27/294 =0.0918

Q: The regional transit authority for a major metropolitan area wants to determine whether there is a…

A: As in this, the age of bus is taken as independent variable which depends on annual maintenance.…

Q: Find the minimum sample size n needed to estimate  for the given values of​ c, ​, and E. c=0.98…

A: The population standard deviation is σ = 9.8. The margin of error is E = 1.

Q: 5. Assume that you plan to use a significance level of a = 0.05 to test the claim that p₁ = P2. Use…

A: It is of interest to test whether the two population proportions are equal.

Q: What are the null and alternative hypotheses? OA. Ho: P1 P2 H₁: P₁ = P2 OD. Ho: P1 P2 H₁: P₁ P₂…

A: A  newspaper published an article about a study in which researchers subjected laboratory gloves to…

Q: Use the accompanying 200 Los Angeles commute times to test the claim that the mean Los Angeles…

A: The given data is as follows, 25 30 15 15 15 45 35 20 90 10 30 10 141 30 60 30 5 60 25…

Q: The following data gives the number of hours 77 students spent studying and their corresponding…

A: The following data gives the number of hours 7 students spent studying and their corresponding…

Q: You are conducting a multinomial Goodness of Fit hypothesis test for the claim that the 4 categories…

A: Answer  Given  Total = 19+45+30+40 = 134 Expected value:  0.2*134 = 26.8 0.4*134=53.6 0.1*1.34 =13.4…

Q: Here are the weights in ounces of a random sample of 25 oranges harvested at Sunny Day Orchards this…

A: We have given a random sample of 25 oranges harvested on sunny Day Orchards this season.  We have to…

Q: Construct the indicated confidence interval for the population mean u using the​ t-distribution.…

A: To construct the confidence interval, we can use the following formula:   CI = x̄ ± tα/2 * (s/√n)…

Q: The performance of 10 runners in a 5 km run is plotted against their resting heart rates. The table…

A: To calculate slope of regression equation in excel, we use: =slope(data_y, data_x)  here data_y=…

Q: Systolic blood pressure levels above 120 mm Hg are considered to be high. For the 100 systolic blood…

A: We have given thatMean(µ) = 120Sample size (n) = 100Sample mean (x̅) = 120.46000Standard deviations…

Q: Consider the probability that 5 students in a calculus class with 400 students were born on the day…

A: n=400, x=5

Q: 7. If our parameter estimate lies inside the 95% confidence interval then we fail to reject the null…

A: We have given the following statement: If our parameter estimate lies inside the 95% confidence…

Q: why wouldnt it be 0.10 since its larger than 0.5?

A: A probability of .001 or less would generally be considered statistically significant, and a…

Q: In a random sample of eleven people, the mean driving distance to work was 18.2 miles and the…

A: Sample size (n) = 11 Sample mean (x̄) = 18.2 miles Sample standard deviation (s) = 4.1 miles…

Q: A researcher randomly purchases several different kits of a popular building toy. The following…

A: The given data is as follows, Building Toy Pieces 169 54 274 359 359 54 113 305 274…

Q: An education researcher claims that 59% of college students work year-round. In a random sample of…

A: The formula of z test statistic is given by              z=p^-PP(1-P)nHere,  p^=estimated proportion…

Q: The table below gives the age and bone density for five randomly selected women. Using this data,…

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

Q: In a random sample of 19 people, the mean commute time to work was 32.5 minutes and the standard…

A: We have given that Sample size (n) = 19Sample mean (x̅) = 32.5Standard deviations (s) =…

Q: Find the test statistic for this hypothesis test. Z= Determine the P Value P-Value

A: Sample size n =1016 Favorable cases x =520 Sample proportion p^=x/n  =510/1016 =0.5118

Q: In a poll, 1100 adults in Nantucket were asked about their computer gaming habits. One finding was…

A: n = 1100 p^ = 0.43 95% ci for p = ?

Q: Determine whether the claim stated below represents the null hypothesis or the alternative…

A: Given: A researcher claims that at least 86% of people had at least one health care visit in the…

Q: Determine whether the following value is a continuous random variable, discrete random variable, or…

A: Discrete variable:   It is nothing but it takes or considers only the countable number of values or…

Q: K The state test scores for 12 randomly selected high school seniors are shown on the right.…

A: Since you have already calculated the sample mean and sample standard deviation thus, we have Sample…

Q: correctly write out the estimated equation and comment on the significance of the predictors of…

A: INT GDP INV 9 3 26 8 4 33 5 2 23 2 4.5 36 6 3.2 29 3 2 20 10 3 24 4 5 40 2 4.5 36…

Q: Suppose you want to test the claim that μ1 > μ2.  Two samples are randomly selected from each…

A: n1 = 35 n2 = 42 x1 = 29.23          x2 = 31.78 s1 = 2.9                      s2 = 2.8

Q: Construct the confidence interval for the population mean u.  c​= 0.95, x= 15.7, o= 7.0, and

A: c​= 0.95, x= 15.7, o= 7.0, and n= 90

Q: 9. If we omit a variable from a regression that is negatively correlated with the included…

A: If a variable that is negatively correlated with the included variables is omitted from a…

Q: Question 5. Researchers want to see if vegan diets are associated with lower cholesterol levels…

A: The null hypothesis (Ho) and alternative hypothesis (Ha) can be stated as: Ho: The mean cholesterol…

Q: A production manager at a wall clock company wants to test their new wall clocks. The designer…

A: Mean(µ) = 15Standard deviations (σ) = 5n = 37

Q: b) Run an ANOVA test using the statistical software package of your choice to compare solvability of…

A: Let us assume alpha=0.05 that is level of significance is 0.05 Let us use R code to run the NAOVA…

Q: alll. know whether this effect can be duplicated with "fake" swear words, or even by repeating a…

A: Anova is used to to test more than two means.

Q: Suppose that X is a normally distributed with a mean 36 and standard deviation is 8 find the given…

A: normal distribution μ = 36σ = 8 P(x<35) = ?

Q: Find p^ and q^. Round your answers to three decimal places n= 79 and X= 24

A: n = 79 x = 24 we have to find value of p^ and q^

Q: 4. Use a 0.01 significance level to test the claim that peanut M&M candies have weights that vary…

A: To test the standard deviation, we use Chi-square-test given by χ2=n-1s2σ2. Where n is the sample…

Q: Suppose that in a random selection of 100 colored candies, 29% of them are blue. The candy company…

A: The information provided in the question are as follows :- Sample size (n) = 100 The sample…

Q: Question 4 Say a study estimates that 65% of a population believes in the importance of mathematics.…

A: p^ = 65%E = 3.5%95% ci  = ?

Q: A simple regression model was fitted to estimate the credit score of customers based on their…

A: From the above histogram we can see that, the tail of the histogram is on right side. So the data is…

Q: Write up your results as you would see them in a research paper from the table attached in images .…

A: Mean explains the average observation of the data set. Standard deviation explains the spread of the…

Q: Use the given confidence interval to find the margin of error and the sample mean. ​(4.63​,8.15​

A: Confidence interval is  ​(4.63​,8.15​)