Math

StatisticsQ&A LibraryA history teacher believes that students in an afternoon class score higher than the students in a morning class. The results of a special exam are shown below. Can the teacher conclude that the afternoon students have a higher score? Use α = 0.01. Morning Students Afternoon Students n 1 = 36 n 2 = 41 1 = 90 2 = 93 s 1 = 5.8 s 2 = 6.3Start your trial now! First week only $4.99!*arrow_forward*

Question

A history teacher believes that students in an afternoon class score higher than the students in a morning class. The results of a special exam are shown below. Can the teacher conclude that the afternoon students have a higher score? Use α = 0.01.

Morning Students Afternoon Students

n _{1} = 36 n _{2} = 41

_{1} = 90 _{2} = 93

s _{1} = 5.8 s _{2} = 6.3

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: n west Texas, warar is cxremcly impertant The fel ow ng cata represent pH Ivas in grcunc waar for a ...

A: Click to see the answer

Q: Allergic reactions to poison ivy can be miserable. Plant oils cause the reaction. Researchers at All...

A: b) The required probabilities are as follows:

Q: A local group claims that police issue at least 60 speeding tickets a day in their area. To prove th...

A: The given claim is that the police issue at least 60 speeding tickets a day.

Q: The mean and standard deviation of the sampling distribution of the mean is shown as?

A: Click to see the answer

Q: Suppose that scores on Statistics final exam of Business School in UK are normally distributed. To e...

A: Click to see the answer

Q: Proportions On April 15th, 1912, the R.M.S. Titanic sank into the North Atlantic Ocean, resulting i...

A: Click to see the answer

Q: The score on an exam from a certain statistics class, X, is normally distributed with μ=78.2μ=78.2 a...

A: From the given information, The score on an exam from a certain statistics class, X, is normally dis...

Q: The number of ants per acre in the forest is normally distributed with mean 43,000 and standard devi...

A: a) Let X be the number of ants in a randomly selected acre of the forest. The random variable X is n...

Q: In an experiment, there are n independent trials. For each trial, there are three outcomes, A, B, an...

A: Click to see the answer

Q: please list the correct answer choices. thank you in advance

A: A random variable is a numerical description of an outcome of a statistical experiment. A random var...

Q: is this statement true or false?

A: Determine whether the given statement is true or False. The given statement is true of false is dete...

Q: During a period of 11 years 800 of the people selected for grand jury duty were sampled, and 62% of ...

A: Click to see the answer

Q: A random sample of 8080 eighth grade students' scores on a national mathematics assessment test has...

A:

Q: Using the standard Normal distribution tables, what is the area under the standard Normal curve corr...

A: From the given information, P (Z<0.75) The area under standard normal cure can be computed as:

Q: I need help to identify the test statstic, p-value as well testing a one-tailed hypothesis test with...

A: From the provided information,

Q: I'm not sure if the first 2 pages will help you answer the question but if not please disregard it a...

A: (a) There are three groups and two groups are needed for one t test. Number of t-tests needed can be...

Q: A store manager recorded the number of customers that enter the store in the afternoon for three mon...

A: Click to see the answer

Q: if 14 jurors are randomly selected from a population where 44% are minorities, what is the probabili...

A: Obtain the probability that 2 or fewer jurors will be minorities. The probability that 2 or fewer ju...

Q: Paleontology students went on a dig for fossils. The following data set contains the number of fossi...

A: Median: The Median represents the middle value of the given data and divides the data into two equal...

Q: Population 1 mean = 36 Population 2 mean = 45Both population standard deviations are 10.Sample si...

A: Given information- For population 1- Sample size, n1 = 16 Sample mean, x1-bar = 36 Standard deviatio...

Q: If a 95% confidence interval contains 0, so will the 99% confidence interval. True False3

A: Solution: As the confidence level increases the margin of error increases. This leads to the increas...

Q: A regression was run to determine if there is a relationship between hours of TV watched per day (xx...

A: Click to see the answer

Q: Answer the following questions. (Write the exact answer as a decimal.) a) At a particular college, 3...

A: a) Let A be the event which represents the students play sports and B represents the students have a...

Q: You are conducting a test of the claim that the row variable and the column variable are dependent i...

A: State the hypotheses. Null hypothesis: Alternative hypothesis: Obtain the expected frequencies f...

Q: The data below is 8 observations of hog heart girth (in) (x) and hog weight (lb) (y). Calculate the ...

A: Correlation: A statistical method that is applied between the pairs of variables to check how the ...

Q: A 9.3.6-T A popular theory is that presidential candidates have an advantage if they are taller than...

A: The hypotheses are; This is an upper-tailed test. Here, μd = μ1 - μ2: Mean of the difference betwee...

Q: A random sample of 9 size AA batteries for toys yield a mean of 3.66 hours with standard deviation, ...

A: Obtain the critical value of t for a 99% CI. The critical value of t for a 99% CI is obtained below:...

Q: Mary is flying from Boston to Denver with a connection in Chicago. The probability Suppose you pick ...

A: Click to see the answer

Q: An airline operates a call center to handle customer questions and complaints. The airline monitors ...

A: Click to see the answer

Q: The effectiveness of a blood-pressure drug is being investigated. How might an experimenter demonstr...

A: It is given that the effectiveness of blood-pressure drug is being investigated.

Q: A health organization asserts that the prevalence of smoking among male adults 18 years or older in ...

A: The test hypotheses are: Null hypothesis: H0: p1 = p2 Alternative hypothesis: Ha: p1 > p2. Test s...

Q: The Denver Post stated that 80% of all new products introduced in grocery stores fail (are taken off...

A: Solution: From the given information, the probability that all the new products in grocery fail is 0...

Q: 2. A scatterplot shows a strong, positive, linear relationship between the number of rebounds a bask...

A: It is given that the scatterplot shows a strong, positive, linear relationship between the number of...

Q: The average starting salary for this year's graduates at a large university (LU) is $20,000 with a s...

A: Obtain the number of students many graduated this year from this university, if 189 of the recent gr...

Q: Suppose we want to compare the GPA for students in at least three different social classes (Upper, M...

A: It is given that the researcher wants to compare the GPA students in three different social classes....

Q: Use the data in the given table to fill in the missing coefficients. Round your answers to 3 decimal...

A: The linear regression equation is y = ax + b.

Q: Records over the past year show that 1 out of 400 loans made by Mammon Bank have defaulted. Find the...

A: It is given that the past year shows that 1 out of 400 loans made by Mammon Bank has defaulted. Ther...

Q: The lifetime for a certain brand of incandescent light bulbs is normally distributed with a mean lif...

A: Click to see the answer

Q: A cappuccino vending machine is designed to dispense an average of ?μ oz per cup. If the ounces per ...

A: Obtain the value of mean such that 6 oz cups will overflow only 2 % of the time. The value of mean s...

Q: The typical college freshman spends an average of ?=150 minutes per day, with a standard deviation o...

A: Solution: Let X be the time on social media. From the given information, X follows normal distributi...

Q: Explain Which of the following would have the largest influence? (h is the leverage, R is the studen...

A: A data point is influential if it influences any part of a regression analysis, such as the predicte...

Q: Conestoga Ltd. has the following estimated probability distribution of returns. ...

A: Click to see the answer

Q: The article “Variance Reduction Techniques: Experimental Comparison and Analysis for Single Systems”...

A: 1. The following procedure is used to construct the ANOVA using Excel, Enter the data as it is in t...

Q: 6) A random sample of 20 ages of world leaders yielded the following data: 54 66 ...

A: Solution: 6. a. Let X be the age. Then, From the given information, the population standard deviati...

Q: You have just analyzed the results from your experiment, and you calculated p = .13. What conclusion...

A: It is given that the p-value=0.13. Consider the level of significance is as 0.05.

Q: You are conducting a test of homogeneity for the claim that two different populations have the same ...

A: Click to see the answer

Q: 4) The loan amounts of loans originated by a large insurance company lender have a mean of $6.74 mil...

A: Since, the sample is large the distribution of the sample mean follows normal distribution. Mean of ...

Q: Test the claim that the proportion of men who own cats is smaller than the proportion of women who o...

A: Consider that n1 and n2 are defined as the sample sizes for men and women respectively.

Q: If np≥5 and nq≥5, estimate P (fewer than 6) with n=14 and p=0.5 by using the normal distribution as ...

A: Solution: From the given information, n=14 and p=0.5. Here,

Q: On average, indoor cats live to 14 years old with a standard deviation of 2.6 years. Suppose that th...

A: a. The distribution of X is, b. The probability that an indoor cat dies when it is between 13.4 and...