The lecturer are concerned that students who enrolled for the course this semester are spending more time playing online games than revising for their upcoming test. In order to pass the test, students need to spend at least 6 hours per week on the course materials. They conducted a survey of 120 students from Section 10G and 15P for which the result shows that the mean time they spent studying for the course in a week is 5.7667 hours with a standard deviation of 1.6487 hours. Using the critical value z0.025 =1.96 , perform hypothesis testing for mean to test whether or not students spent at least 6 hours wee

Q: e in the upper 2.5% of admission test scores in order to qualify for a very competitive nursing…

A: The z score can be calculated as: z=x-μσ The required z score that is associated with the top 2.5%…

Q: One year Thomas had the lowest ERA (earned-run average, mean number of runs yielded per nine innings…

A:

Q: Many people consider their smart phone to be essential! Communication, news, Internet,…

A: Given information Mean µ = 12.75 hours Standard deviation σ = 2.1 hours

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A: The objective of this question is to test the claim that the mean number of customers who make a…

Q: One year Thomas had the lowest ERA​ (earned-run average, mean number of runs yielded per nine…

A: We have given that  X~N( μ , ?^2 )   Z-score =( x - μ )/?

Q: For a study conducted by the research department of a pharmaceutical company, 260 randomly selected…

A: We have given that Sample mean (x̅1) = 17.80Sample mean (x̅2) = 18.20Sample size (n1) = 260Sample…

Q: The Pew Internet and American Life Project surveyed 2227 adults in 2011, asking them about their…

A: It is given that the mean number of text messages sent per day is 40.9 for men, 42.0 for women. The…

Q: A health psychologist is interested in the potential effect that a change in career focus can have…

A: Let the systolic blood pressure be denoted by X. Given: X~N142, 132 sample size (n) used: 23 sample…

Q: The historical reports from two major networks showed that the mean number of commercials aired…

A: There are two independent samples which are first station and second station. We have to test…

Q: Ermias and Trinidad began arguing about who did better on their tests, but they couldn't decide who…

A: given data Ermias  :   μ1 = 76.7     σ1  = 10.5       x1 = 76.5Trinidad  :   μ2 = 64.5     σ2  = 8.1…

Q: An interesting research question is an effect, if any, that different types of teaching formats have…

A: Data for hybrid students-sample 1The sample size The sample mean The sample standard deviation Data…

Q: An interesting research question is an effect, if any, that different types of teaching formats have…

A: Given Information: Hybrid class: Sample size n1=35 Sample mean x¯1=74 Sample standard deviation…

Q: You may need to use the appropriate appendix table or technology to answer this question. According…

A: The hypothesized mean is 3 weeks.

Q: A new small business wants to know if its current radio advertising is effective. The owners decide…

A: Given Data : For Sample 1 x̄1 = 18.3 s1 = 1.8 n1 = 10 For Sample 2…

Q: Activity trackers are electronic devices that people wear to record physical activity. Researchers…

A: Given Information:  Sample size (n) = 61  Mean value (x) = 9797 steps Standard deviation = 2313…

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A:

Q: In 2019, College Board reported that the mean score for the math section of the SAT was 521 with a…

A:

Q: For a study conducted by the research department of a pharmaceutical company, 225 randomly selected…

A: It was stated that a study was conducted on a pharmaceutical company by the research department. A…

Q: A researcher wants to examine whether VCU students send and receive fewer texts per day than the…

A:

Q: For a study conducted by the research department of a pharmaceutical company, 245 randomly selected…

A: Data given n1=245 , sample mean x̄1= 17.8 and s1= 4.3 n2=225, sample mean x̄2=18.2 amd s2= 3.60

Q: Population 2. Step 2 of 3: Compute the value of the test statistic. Round your answer to three…

A: It is given thatFor sample 1:n1=13,x1¯=23.9,s1=1.9n2=6,x2¯=24.7,s2=1.6α=0.01

Q: A person must score in the upper 0.15% of admission test scores in order to qualify for a very…

A: Let x be the marks obtained by the person. Let y be the minimum score that the person must achieve…

Q: A new small business wants to know if its current radio advertising is effective. The owners decide…

A: Given : Claim : The mean number of customers who make a purchase in the store is lower for days…

Q: You may need to use the appropriate appendix table or technology to answer this question. According…

A: Givensample size(n)=38Mean(x)=3.6standard deviation(s)=2significance level(α)=0.05

Q: Suppose a new Director of Health Services for a district claims that she will reduce the average…

A: The one sample t-test is performed in MINITAB for the given data.Step-by-step procedure to perform…

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A: The engineers are recording the number of vehicles passing through a certain intersection to…

Q: A statistics professor announces that 15% of the grades he gives are As. The results of the final…

A: It is given that the mean and standard deviation are 83 and 6, respectively.

Q: The combined SAT scores for students at a local high school are normally distributed with a mean of…

A: X follows a Normal distribution with mean = 1497 and S.D = 293 Then z=(x-mean)/SD = (x-1497)/293…

Q: Dr. Vegapunk thinks that watching anime (Japanese animated shows) decreases social skills in college…

A: Dr. Vegapunk thinks that watching anime (Japanese animated shows) decreases social skills in college…

Q: Researchers want to compare the relative effectiveness of two popular diets. They randomly assign…

A:

Q: We are trying to test whether, a new low fat diet actually helps obese people lose weight. 150…

A: Solution: Hypothesis testing:   From the above hypothesis test we can conclude that the low fat…

Q: A paper describes asrvey ofasample of e maie students and a sampie of 5 female students ata large…

A:

Q: A new small business wants to know if its current radio advertising is effective. The owners decide…

A: The objective of this question is to test the claim that the mean number of customers who make a…

Q: Suppose you work for a large electronics store as a manager. You track individual employee…

A: The mean is 10462 and the standard deviation is 2512.

Q: For a study conducted by the research department of a pharmaceutical company, 265 randomly selected…

A:

Q: Juwan and Aaron began arguing about who did better on their tests, but they couldn't decide who did…

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Q: t is known from a recent marketing psychology research that the average popularity perception score…

A: To perform the hypothesis test, we need to follow the following steps:  Step 1: State the…

Q: stimated that only 2% of high school athletes receive even a partial athletic scholarship to…

A: Given data,p=2% =0.02n=500Find variance and standard deviation?

Q: State the conclusion in the problem context.   We fail to reject H0. It is not reasonable to…

A:

Q: Two samples of 103 and 80 students are taken with a view to find out their average monthly…

A:

Q: A person must score in the upper 0.15% of admission test scores in order to qualify for a very…

A: A person must score in the upper 0.15% of admission test scores in order to qualify for a very…

Q: Many people consider their smart phone to be essential! Communication, news, Internet,…

A: Mean()=11.75standard deviation()=2.3