Create three examples of research title and write the null and alternative hypothesis for each title. Answer with text and/or attachments:
Q: The diameters (in inches) of 17 randomly selected bolts produced by a machine are listed. Use a…
A: Given n=17 Data 4.476 3.807 3.939 4.422 3.754 3.733 4.034 4.215 3.866 4.345…
Q: In a survey taken in 2020, 20 out of 50 women and 17 out of 45 men said that they felt our country…
A: Given , Women sample : Sample size = n1 = 50 Number of women who felt our country was headed in the…
Q: The histogram below shows the distribution of pass rates on a swimming test taken by children who…
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Q: In a bingo game , there are 75 balls. in the first draw, determine the probability that ball is a. A…
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Q: Given below are results from the regression analysis where the dependent variable is the number of…
A: Given that
Q: The following information summarizes the linear relationship between size (in square feet) and…
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Q: State the Result: A hypothesis test was conducted at the alpha = 0.01 level of significance. The…
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Q: For this data, the least squares line is D=0.153 + 12.679 x. Find the predicted/fitted values for…
A: Here use basic of least square regression line
Q: Q1 A coin throw three times find: 1. Sample space 2. Probability at least head appear twice 3.Never…
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Q: Managers of an industrial plant want to determine which of two types of fuel, gas or electric, is…
A: Sample mean for electricity(x1)=60.80 Standard deviation for electricity(s1)=8.53 Sample size for…
Q: An automotive engineer is investigating two different types of metering devices for an electronic…
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Q: sleep researcher hypothesizes that people who are allowed to sleep for only four hours will score…
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Q: normal distribution has a mean of 80 and a standard deviation of 14. Determine the value above which…
A: Given that X~N(μ= 80 , σ= 14 ) μ= 80 , σ= 14 Formula for Z-score Z=(X-μ)/σ
Q: In a local teaching district, a technology grant is available to teachers in order to install a…
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Q: d. n 300, x = 100,95% confidence, s = 2.75 e. n = 450, x = 150,99% confidence level s = 4.72
A: Solution-: We construct the C.I. (d) Given: x¯=100,n=300,s=2.75,c=0.95 (e) Given:…
Q: H1: μfemales > μmales B) H1: μfemales < μmales C) H1: μfemales ≠ μmales D) H1: μfemales = μm
A: Solution
Q: Does the presence of a significant interaction change the interpretation of significant main…
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Q: Q19: Consider the following data: 3s, 12, s0, 49, 28, 41, 47 The 60-th percentile is (A) 47.4 (B)…
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Q: Suppose the following table was generated from the sample data of 20 campuses relating the total…
A: 1. In this case, the total number of crimes is the dependent variable, the number of officers and if…
Q: 11 Q16: For a sample, we find that (x-7} =90, so the standard deviation (S) is (B) 3 (C) 3 (D) None…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: The following data were used in a regression study. Observation 1 2 3 4 5 6 7 8 9 xi 2 3 4 5 7 7 7 8…
A: From the provided information, x y 2 4 3 5 4 4 5 7 7 4 7 6…
Q: Q6: The probability that a person owns a microwave oven is 0.70, that a person owns a CD player is…
A: Here from given information, Define events Person has microwave oven = M Person own CD player = C…
Q: Estimate the indicated probability by using the normal distribution as an approximation to the…
A: It is given that n=10,000 and p=0.02.
Q: For an experiment, among 5924 patients treated with a blood clot medicine, 153 developed an allergic…
A: We have given that, Favorable cases (X) = 153 and sample size (n) = 2459 Then, We will find the…
Q: What is the chance that one card will be a spade that is exactly one card? What is the probability…
A: Total cards in standard deck of cards = 52 Number of spade cards = 13 Then, Part(a). probability of…
Q: Problem 1: The joint probability distribution of two random variables X and Y is given in the…
A: Here a discrete random variable probability mass function is given. By using marginal density…
Q: Let X be the continuous random variable which is the age of a first-year university student selected…
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Q: Find the P-value: Type your answer as a decimial rounded to three decimal places. Do not type a…
A: Given that, a local TV station wished to determine if a higher proprotion of women watch the local…
Q: people, the mean commute time to work was 30.7 minutes and the standard deviation was 7.2 minutes.…
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Q: Convert 8500 hours to years.
A: Given that, The number of hours is, 8500 hours The number of hours in a day is, 24 hours The number…
Q: a distribution with u= 11.5 and o-2.5 If this distribution can be approximated closely with normal…
A: Let X be the random variable from normal distribution with mean (μ) = 11.5 and standard deviation…
Q: Problem B The manufacturer of a patent Chinese medicine claimed that it was 90% effective in…
A: We have given that Claim is 90% p = 90% = 90/100 = 0.90 n = 200x = 160p̂ = x/n = 160/200 = 0.80
Q: Suppose we are interested in studying the relationship between the shelf life of cheeses in a dairy…
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Q: Which of the following statements are true? I. The mean of a population is denoted by X. II. The…
A: Information about population mean and sample mean. Sample mean =x̄ Population mean μ
Q: We wish to estimate the difference in mean GPAS at two different colleges. Consider the following…
A: Given Information: School A: x¯1=4.05 s1=0.03 n1=80 School B: x¯2=3.95 s2=0.04 n2=90 Confidence…
Q: A company estimates that 0.1% of their products will fail after the original warranty period but…
A: Given Cost is 46
Q: Years ר
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Q: f. A random sample of n= 80 observations from a quantitative population produced I = 30.2 and s? =…
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Q: 3. needed to estimate the percentage of adults who can touch their nose with Find the sample size…
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Q: What is the chance that one card will be a spade that is exactly one card? What is the probability…
A: Here Total No of cards=52
Q: Fedred. Their ages at retirement are given in the frequency table below. Find the median retirement…
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Q: rrivals of customers at a novelty shop form a Poisson process with rate (per our) that is uniformly…
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Q: (a) Construct a 99.8% confidence interval for the difference between the proportions of customers…
A: A random sample of 99 convenience store receipts; n1=99 22 of them showed a purchase of the…
Q: Let p be the population proportion for the following condition. Find the point estimates for p and…
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Q: A supervisor is reviewing a production line that has been experiencing problems with the sequencing…
A: The following information has been given: The sample size for technique A is n1=10. The sample size…
Q: 『/ f メ,メ K、 be ars fo U()e) Tet Yu be the Larsest s the n bservotien an unbiesed estometor fr 6? E-…
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Q: Question 8 A Pick any two variables that you feel may be related and estimate what you think the…
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Q: (Round your onswers to 2 decimal ploces) The regression eouation is The predicted value is:-
A: Use the Excel and Perform the Regression. Followings are the Steps to perform the Regression 1) Open…
Q: In a survey of 3461 adults, 1491 say they have started paying bills online in the last year.…
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Q: Two dice are rolled. ne two dice is 5, and B is the event that at least one of the dice shows up a…
A: Possible samples in rolling a die={1,2,3,4,5,6} Sample space in rolling two dice=…
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- Which of the following below could be the alternative hypothesis ? ( look at the image )Based on the information provided in the image, what is the result of your hypothesis test (a=0.01, one tail)?Based upon your answers to 1A and 1C, specify whether you would reject the null hypothesis or would fail to reject the null hypothesis. Then explain what could be concluded about binge drinking based upon this result.
- A student conducts a hypothesis test at alpha = 0.10. If the P-value is 1.62, which of the following statements is true? A. The student should reject the null hypothesis. B. The student should not reject the null hypothesis. C. The student made a mistake in calculating the P-value.State whether each hypothesis is null or alternative. 1. Students using i brand A ballpens write better than those using brand B balipens. 2. There is no s gnificant difference between the average consumption of gasoline in carA and the average consurption of gasoline in car B. 3. The proportion of senior high school graduates in a certain school is 10% of the entire population. 4. The average iricome of families per month in a certain town is 38,000 pesos. 5. The proportion of husbands using motorcycles in region 2 is more than 50%. 6. The proportion of patients with lung cancer is higher among smokers than among nonsmokers. 7. The proportion of senior high school students who enrolled in HUMSS strand is not equal to 80%. 8. An airline claims that less than 12% of its entire lost luggage is never found. 9. The proportion of COVID 19 patients who have asymptomatic cases is less than 25%. 10. The propcrtion of students who will use distance learning in the entire population is more than…Suppose an engineering firm is asked to check the safety of a dam. A) What kind of mistake would be made if the Ho (null hypothesis) that the dam is safe is wrongly rejected? B) What kind of mistake would be made if the Ho that the dam is safe is wrongly accepted?
- p>alpha a) reject the null hypothesis b) accept the null hyopthesisQuestion 21, Multiple choice below. 21. The financial aid director of a large college reports that 38% of the students enrolled are receiving some sort of financial aid. A researcher claims the percentage is lower and finds (from sampling) 29 out of 116 students are receiving some sort of financial aid. At alpha = 0.05, decide whether the financial aid director's report that 38% of the students are receiving some sort of financial aid holds up. For question #21 (multiple choice), choose the alternative hypothesis. For #22, fill in the space provided with your calculated value for p hat. For question #23, fill in the space provided with your calculated z-value from the information provided. For #24, answer True or False with regard to rejecting the null hypothesis.Question 15: In a recent Super Bowl, a TV network predicted that 90 % of the audience would express an interest in seeing one of its forthcoming television shows. The network ran commercials for these shows during the Super Bowl. The day after the Super Bowl, and Advertising Group sampled 55 people who saw the commercials and found that 48 of them said they would watch one of the television shows.Suppose you are have the following null and alternative hypotheses for a test you are running:H0:p=0.9H0:p=0.9Ha:p>0.9Ha:p>0.9Calculate the test statistic, rounded to 3 decimal places z=