(f) Would it be unusual if less than 38% of the sampled teenagers owned smartphones? It (Choose one) would would not be unusual if less than 38% of the sampled teenagers owned smartphones, since the probability is

Q: Why is the null hypothesis for a dependent-samples t- test always μD=0 μD=0 ?

A: Hypothesis is a statement or claim above property of  population. Null Hypothesis: states that there…

Q: The value of r_5 is 0.16, and r_4 is 0.20. How is r_5 greater than r_4 in "step 1"?

A: step 1 is wrong  r_4 = 0.16 and r_5 = 0.21, which means that r_5 is greater than r_4. This indicates…

Q: 3. P(Z 2.92) 5. P(-3.10z< 1.90)

A: From the provided information, The probability expressions are as follow: 3. P (z &lt; -0.73) 4. P(z…

Q: The following graph shows operating costs for different modes of transit. The graph includes three…

A: Based on the options, it can be concluded that light rail is the most cost-effective option for rail…

Q: Find the P-value for a left-tailed hypothesis test with a test statistic of z= -1.23. Decide whether…

A: According to the given information in this question We need to identify the correct option

Q: A sample of 28 adults attending a country fair determined that the mean age was 34, given that the…

A:

Q: Which of the following tests is used to test if the homogeneity of variance assumption is met?…

A: which of the given tests is used to test if the homogeneity of variance assumption is met.

Q: Test the given claim. Assume that a simple random sample is selected from a normally distributed…

A: The new production data are: -43 79 -25 -74 -45 12 17 51 -6 -51 -109 -109 The significance…

Q: We are trying to evaluate if the true proportion of people who are male is less than 50%. What type…

A: We are trying to evaluate if the true proportion of people who are male is less than 50%.

Q: magazine provided results from a poll of 500 adults who were asked to identify their favorite pie.…

A: Given that a magazine provided  results from a poll of 500 adults who were asked to identify their…

Q: Use a normal approximation to find the probability of the indicated number of voters. In this case,…

A: n=120P=0.22Mean(μ)=npMean(μ)=120×0.22Mean(μ)=26.4Standard deviation(σ)=np(1-p)Standard…

Q: Consider a sample of 51 football games, where 27 of them were won by the home team. Use a 0.10…

A: sample size(n)=51x=27significance level(α)=0.10sample proportion(p^)=xn=2751≅0.5294

Q: An online poll asked: "Do you believe the Loch Ness monster exists?" Among 22,273 responses, 62%…

A: The population proportion is studied by taking samples from the population and comparing the sample…

Q: A report statesb that 46% of home owners had a vegetable garden. how large a sample is needed to…

A: p=46%=0.46, E=4%=0.04

Q: Use the Student's t distribution to find tc for a 0.99 confidence level when the sample is 11.

A: Answer:- Given, Confidence level = 0.99 So, Level of significance, α = (1-0.99) = 0.01  Sample size,…

Q: This exercise involves a complementary event. Find the probability of the given event. Assume that…

A: There are 52 card in the deck in which they divided into two color i.e red(26) and black (26). These…

Q: The graph below shows the amount of time students listen to music at school. Arturo 200- 100+ 5 10…

A: In graph :  From graph we can conclude the information :v Y-axis :  It is from(0 to 200)  1small row…

Q: How many years is a randomly selected 19-year-old expected to live beyond his or her 19th birthday?…

A:

Q: Kara categorized her spending for this month into four categories: Rent, Food, Fun, and Other. The…

A: Rent $528 Food $422 Fun $317 Other $633

Q: Test the hypothesis that the true proportion of males is greater than 45% at the a=0.07 level.…

A: Sample size =177  Proportion=0.45  p value=0.05894  We have to find  the assumptions and the…

Q: The test results attached are output of SPSS analysis which were the temperature change of countries…

A: The result displays the temperature changes over a five-year period in six equatorial nations…

Q: A researcher wishes to estimate, with 99% confidence, the population p doing a good or excellent…

A: Margin of error =E =4%=0.04 99% confidence level

Q: Tign pres of adults, and res are normally distributed with a mean of 100 and a standard deviation of…

A: Population mean=100 , population standard deviation =15

Q: Find the cost of a home in 30 years, assuming an inflation rate of 1% (compounded continuously), if…

A: time = 30-years An inflation rate of 1% =1/100=0.01 if the present value of the house is $265,000.…

Q: test statistic for the One Way ANOVA is the _________   z statistic F statistic t statistic R…

A: One Way ANOVA is called Analysis of variance

Q: We’re trying to show that the true average calcium level in humans is greater than 2.4. What are the…

A: Claim : true average calcium level in humans is greater than 2.4

Q: Calculate the monthly finance charge

A: To calculate the monthly finance charge using the average daily balance method, we need to find the…

Q: If your null and alternative hypothesis are: H0:μ=64H0:μ=64  H1:μ<64H1:μ<64 Then the

A: null and alternative hypothesis are:H0:μ=64H1:μ&lt;64

Q: Exercise 3-Curve Fitting with Polynomial The following data points were obtained from an…

A: The least-square equation is used to determine the equation which best fits the data set. If the…

Q: An Internet service provider is interested in testing to see if there is a difference in the mean…

A: There is no evidence to conclude that there is a significant difference in the mean weekly connect…

Q: In the following scenario, identify the type(s) of bias, and either explain why the results of the…

A: It is required to identify the type(s) of bias in the study, if any.

Q: Marine biologists have noticed that the color of the outermost growth band on a clam tends to be…

A: A) The point estimate for the true difference in proportion of dark growth bands between February…

Q: Suppose 247 subjects are treated with a drug that is used to treat pain and 52 of them developed…

A: Given: Sample size (n) = 247 Number of subjects developed nausea (x) = 52 Hypothesized proportion…

Q: Which of the following is true about conducting too many statistical significance tests without…

A: Which of the following is true about conducting too many statistical significance tests without…

Q: n IBM SPSS, what does clicking on this icon do? a. Expand any collapsed sections of SPSS output. b.…

A: The icon image in IBM SPSS is given.

Q: 3. 401(k) plans permit employees to shift part of their before-tax salaries into investments such as…

A: Obtain the 95% confidence interval for the mean participation rate for all companies that have…

Q: Which of the following is NOT true about a Factorial ANOVA?   Factorial ANOVAs have a continuous…

A: Factorial ANOVA: Factorial anova is used when there are 2 or more independent variables or factor…

Q: The data in the following table show the outcomes of guilty and not-guilty pleas in 1,025 criminal…

A: Total =1025 Guilty plea and sent to prison = 390

Q: company says that the mean gas mileage for its luxury sedan is at least 21 miles per hat a random…

A: Sample size n =7 Sample mean=18 Standard deviation =5 NOTE:- According to bartleby guidelines expert…

Q: 1. Using a calculator or computer, sketch the grant of the following function. (i)y = 3* (ii)…

A: graph of y=3^x The function y = 3^x is an exponential function. Its graph is a curve that starts…

Q: Part G) cont. C)if an individual is chosen at random,the probability that they have exactly 2 credit…

A: The mean is the measure of central tendency and it determines the average of a data set for…

Q: Assume that 61% of population in USA vote for Candidate 1. The rest of population vote for Candidate…

A: It is given that 61% of the population in USA vote for Candidate 1. Thus, the probability that a…

Q: Approximately what is the mean success score for those in the hypnosis group who did not want to…

A: Boxplot describes five number summary of a data set. They are minimum, first quartile, mean, third…

Q: the mean delivery time is 35 minutes and the population standard deviation is six minutes. assume…

A: Sample size, n = 50 Sample mean x̅ = 35 minutes Population standard deviation σ = 6 minutes…

Q: The following information on rotting or diseased kiwi fruit has been provided by workers of a…

A: From the given information, Sample number Mean 1 15 2 10 3 12 4 20 5 17 6 25 7 10…

Q: a) Consider a t distribution with 26 degrees of freedom. Compute P(-1.81<t<1.81). Round your answer…

A: here given , t distribution with degree of freedom = 26 in part a) t distribution with degree of…

Q: The percentage of men who meet the height requirement is 3.8%.

A: A survey found that women's heights are normally distributed with mean 63.3 in. and standard…

Q: A simple random sample of 46 men from a normally distributed population results in a standard…

A: Population standard deviation, σ = 10 bpm Sample size, n = 46 Sample standard deviation, s = 9.6 bpm…

Q: Calculate the test statistic,

A: here  In a recent Super Bowl, a TV network predicted that 54 % of the audience would express an…

Q: Test the given claim. Assume that a simple random sample is selected from a normally distributed…

A: The question is about hypo. testing Given : Std. deviation old production method ( σ ) = 32.2 ft…