A data set includes data from student evaluations of courses. The summary statistics are n = 87, x = 3.34, s 0.67. Use a 0.05 significance level to test the claim that the population of student course evaluations has a mean equal to 3.50. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. There are two requirements that must be checked and met in order to test a claim about a population mean when the population standard deviation is not known using the Student t distribution. The first is that the sample is a simple random sample. For this problem, it is stated to assume that the sample is a simple random sample.

Q: If n=21, (x-bar)=34, and s=8, construct a confidence interval at a 98% confidence level. Assume the…

A: Here, mean is 34 and standard deviation is 8. Sample number is 21. We will use one sample t…

Q: ness of three different cattle feed supplements. He selec a random sample of 15 one-year-old heifers…

A: Given: The weights of three supplements are shown below Group A Group B Group C 500 700 500…

Q: Help me solve this 17 parts remaining ne claim is that for 9 AM body temperatures of females, the…

A: Given that  Sample size n =33 Population mean =98.6 Test statistic t= - 4.786

Q: A sociologist is interested in the difference in voting rates between women and men.  One hundred…

A: Given. n1 be the number of women  n2 be the number of men  let p1^ be the sample proportion of women…

Q: Which would be the appropriate command in Excel to calculate the following? What is the probability…

A: The average is 4.

Q: A cannabis business operates as follows. Let X, be the amount of cannabis in its inventory on the…

A:

Q: Ronnel got the following grades for the third-grading period: 83 Chemistry Filipino English…

A: From the provided information, The data values are as follow: 83, 82, 78, 76, 80

Q: 10% of your emails are spam emails. Your spam filter catches spam 90% of the time. Your spam filter…

A: Please see attached file below

Q: 1.   What is the net single premium required for (x) to purchase a 10 year pure endowment with…

A: Given: Term(n) = 10 Sum assured (S) = 10000 Rate of interest (j) = 0.03 lx = 6800 lx+10 = 4130

Q: Poisson 5. Geometric

A: Solution-:  Identify the following probability distributions as discrete or continuous.

Q: Suppose that the average time spent per day with digital media several years ago was 3 hours and 42…

A: We have given that,  Sample mean (µ) = 5.49, standard deviation (s) = 2.20 and sample size (n) = 20…

Q: The support allows us to look at categorical data as a quantitative value. True O False Discrete…

A: Quantitative data:  Discrete random variable: A random variable is said to be discrete if its value…

Q: ents caught at random find the probability that (i) none of them is them is mischievous.…

A: Given that  Number of trials n=3 Success of probability p =0.05 X~binomial (n , p)

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 600…

A: Solution-:  Given: n=600, X=342, c=0.90 We find 90% C.I. for the true population proportion.

Q: Explain the differences between a One-Way and a Two-Way Chi-Square Test. Which of these do you think…

A: We know that The chi-square test is sensitive to sample size. DIFFERENCE BETWEEN ONE-WAY AND A…

Q: If in the expansion of (1 + n}+", the 5th term is 24 times the 3rd term, fnd the value of n.

A:

Q: Please help me with Q:D I tried a-lot

A: Given data in a group of 1000 people only 5% have type AB blood.

Q: D Click here for the Excel Data File (a) Find the mean, median, and mode. (Round your answers to 2…

A: Mean: It is the sum of an observations divided by the total number of observations of the data set.…

Q: For each of the following quantities in the box model, select the answer if the quantity is…

A: Confidence interval is a range of values computed at (1-α)100% level of confidence.

Q: 8. For the following scores, Y 3 a. Sketch a scatter plot and estimate the value of the Pearson…

A: a) Steps of create scatter Plot; 1. Enter the data in excel then, go to insert --- scatter plot ----…

Q: Suppose that the average time spent per day with digital media several years ago was 3 hours and 27…

A: Sample size (n) = 20Sample mean (x̅) = 5.45Standard deviations (s) = 2.20Significance level (α) = 1-…

Q: Determine the sample mean and sample standard deviation based on the confidence interval for the…

A: a) The sample mean is, The value of margin of error is, The degree of freedom is, df=n-1   =13-1…

Q: different regions of the Philippines. Region National Capital Region (NCR) Cordillera Administrative…

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

Q: [Statistics] Use R or RStudio Context of the problem: Fire damage in the United States amounts to…

A:

Q: A sports league performs a hypothesis test at the 0.10 level of significance to determine it the…

A:

Q: A raft is floating on the ocean. Its distance compared to the height of the dock is recorded over…

A:

Q: fetime of electronics: In a simple random sample of l00 electronic components produced by a certain…

A:

Q: The claim is that weights (grams) of quarters made after 1964 have a mean equal to 5.670 g as…

A: Given that  Sample size n =36 Population mean =5.670 Test statistic t =-3.334

Q: Professor Diff E. Cult wonders if male and female students earn significantly different grades when…

A: Solution: In the given example we are interested in testing the hypothesis that the gender and…

Q: 5. In a sample study about the smoking habits in two towns following data were derived. Town A Town…

A:

Q: The diastolic blood pressure for American women ages 18 to 44 has an approximately Normal…

A: Given that

Q: a. What is the advantage of the interval estimate over the point estimate? Explain clearly.

A: Disclaimer : Since you have asked multiple question, we will solve the first question for you. If…

Q: ifferent regions of the Philippines. Region Average Expenditure p Family (in thousands 369 National…

A: Given: The data given is as follows 369 230 205 174 270 305 175 193 202 204…

Q: In a survey, 21 people were asked how much they spent on their child's last birthday gift. The…

A: Given that, x¯=32,s=8,n=21 The degree of freedom is, df=n-1   =21-1   =20 Critical value: Using the…

Q: When we control the IQ, how to change the regression coefficient of Edu variable? Notes: IQ can…

A: Given information: The regression equation is given to estimate the rate of return to education.

Q: Researchers were interested in comparing the long-term psychological effects on dieters who were on…

A: For the t test for two means, Null hypothesis is there is no significance difference between two…

Q: Suppose you are interested in studying regional differences in crime rates. You take a random…

A:

Q: Calculate SP (the sum of products of deviations) for the following scores.

A: From the given information, X Y 4 5 0 2 1 1 3 4

Q: The distribution of room and board expenses per year at a four-year college is normally distributed…

A:

Q: Use the normal distribution and the given sample results to complete the test of the given…

A: We have given that The null hypothesis and alternative hypothesis are H0 : p = 0.25  Ha : p <…

Q: You wish to determine if there is a negative linear correlation between the age of a driver and the…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: 1. The data given below are the heights (in cm.) of 12 boys who are particip a basketball…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A small-business Web site contains 100 pages and 60%, 30%, and 10% of the pages contain low,…

A: From the given information, A small-business Web site contains 100 pages and 60%, 30%, and 10% of…

Q: The time spent on volunteer activities varies within a group of students. A particular group of…

A: Mean μ=2, standard deviations σ=3 , n=100  P( x̄>2.5)=?

Q: .8 The force of mortality is a constant 0.04 and the force of interest is a constant 0.06. A term…

A: Given: Premium = π Term of policy = 40 Premium paying term = 20 μ=0.04δ=0.06

Q: A variable of a population has a mean of u = 82 and a standard deviation of o = 9. a. Identify the…

A: From the provided information, Mean (µ) = 82 Standard deviation (σ) = 9 X~N (82, 9)

Q: If there are no pages with moderate graphics drawn, how many pages with high graphic content would…

A: A small-business Web site contains 100 pages and 60%, 30%, and 10% of the pages contain low,…

Q: Joint Distributed RV in R f_xy = (3x + 2y)/30000

A: Given information: fxy=3x+2y30000, x=1, 2, ....,25 and y=1, 2, .....,20 1) P(X-Y=3): The possible…

Q: Many drivers of cars that can run on regular gas buy premium in the belief that they will get better…

A:

Q: Which would be the appropriate command in Excel to calculate the following? What is the probability…

A: Given: n = 13 x = 6 p = 0.80