The manufacturer of a popular soft drink claims that cans of this drink contain 12 ounces.  A consumer group is suspicious of this claim and believes the amount in each can is less than 12 ounces.  A random sample of 18 cans is selected and the amount in each can is measured.  The results are as follows: 11.9     11.9     12.0     11.9     12.0     11.7     11.6     11.5     11.6    12.0     11.8     11.7     12.2     11.5     12.1     11.8     12.1     11.8 Calculate the sample standard deviation s. Round its value to two decimal places.____________

Q: Only 18% of registered voters voted in the last election. Will voter participation decline for the…

A: a. we should use z test for one sample proportion.

Q: A coffee machine dispenses coffee into paper cups. You're supposed to get 10 ounces of coffee, but…

A: The data shows the amount of coffee for 20 cups.

Q: Test whether the population average mpg is actually greater than 18 mpg using a 1% level of…

A:

Q: The following six advertising campaigns show the number of ads (x) and the resulting sales revenues…

A: Solution: x y (x-x) (x-x)2 (y-y) (x-x)(y-y) 10 49 0 0 5 0 6 41 -4 16 -3 12 16 49 6 36 5 30…

Q: Independent random samples of professional football and basketball players gave the following…

A:

Q: The drinking water supplies in an area were tested for levels of chloramine and reported the average…

A: Solution: Let X be the chloramine concentration. The given data is 2.80, 3.57, 4.08, 4.13, 3.77,…

Q: The fuel economy sticker on a new SUV’s window sticker indicates the owner can expect 16 mpg in city…

A: The hypothesized mean is 18 mpg.

Q: In the nation of Gondor, the EPA requires that half the new cars sold will meet a certain…

A: The question is about hypothesis testing.Given :Population proportion of new car will meet a…

Q: A machine being used for packaging seedless golden raisins has been set so that on average, 15…

A: Given Information: Sample size (n) = 30 Hypothesized value (μ0) = 15 ounces Significance level…

Q: C. Find the sample size from each of the given data. 7.95% level of confidence, E = 10, o = 24 8.…

A: C. 7.  Here it is given that 95% confidence , margin of error E=10 and standard deviation σ=24…

Q: The type of household for the U.S. population and for a random sample of 411 households from a…

A: Given data  N=411 α=0.05 Type of Household Percent of U.S.Households Observed Numberof Households…

Q: Meteorologists in Texas want to increase the amount of rain delivered by thunderheads by seeding the…

A: From the given information, The value of n is 30. The average value of population is 300.

Q: You want to conduct a test to determine whether there are significant differences in the mean…

A: It is needed to find the proper test.

Q: Consider a sample wilh dala values of 12, 14, 18, 22. 24. Compule the 3rd quartile. Select one: O a.…

A:

Q: 2. 10% of all college students volunteer their time. Is the percentage of college students who are…

A: As per our guidelines, we can solve only the first three subparts, Kindly repost the others for…

Q: Consider these sample​ data: x1=12​, x2=6​, x3=4​, x4=14.   Find n.      Compute ∑xi. Determine x.

A:

Q: A cigarette manufacturer claims that his cigarettes have nicotine content that does not exceed 2.0…

A: Introduction: Denote μ as the true mean nicotine content in the cigarettes produced by the given…

Q: ndom sample of 20 cups. 9.9 9.7 10.0 10.1 9.9 9.6 9.8 9.8 10.0 9.5 9.7 10.1 9.9 9.6 10.2 9.8 10.0…

A: Here n=20

Q: The following dala represent the weight (in grams) of a random sample of 13 medicine tablets. Find…

A: Introduction: The five-number summary includes the minimum, first quartile, second quartile…

Q: A coffee machine dispenses coffee into paper cups. You're supposed to get 10 ounces of coffee, but…

A: A random sample of 20 cups is given. We have to find the degrees of freedom.

Q: A quality-control apprentice is preparing a CUSUM chart. The values calculated for SL and SH are…

A: We Know that, The Cumulative Sum of SL is always Negative and Zero. The Cumulative Sum of SH is…

Q: A doctor is concerned that a drug treatment causes people to run a fever.  She recruited n = 50…

A: Given Data: n=50   There is only one sample

Q: Find the standardized test statistic, z to test the claim that p, = p2. The sample statistics listed…

A: The sample proportions are: The value of the pooled proportion is computed as :

Q: Find the values of the UCL and LCL for the R chart for this data

A: Number of sub-groups = 20 Sample size n = 7

Q: For which quartile , 25% observations are greater and 75% are smaller ? A. First quartile B Third…

A: It is an important part of statistics. It is widely used.

Q: A researcher gathered from historical papers that the proportion for the success of an event was…

A:

Q: Bill Alther is a zoologist who studies Anna's hummingbird (Calypte anna). (Reference: Hummingbirds,…

A: The sample test statistic is, z=x¯-μσn=3.75-4.300.646=-0.550.2612789=-2.1050≈-2.11 Thus, the sample…

Q: A t-test would NOT be appropriate for which sample size? a.27 b.17 c.16 d.57

A: The question is about t test Introduction : t test : 1 ) This test is used check whether the mean of…

Q: Bill Alther is a zoologist who studies Anna's hummingbird (Calypte anna). (Reference: Hummingbirds,…

A:

Q: Determine the sample​ proportion, p, of households that own a Company A product. b. If the…

A: Let , n=total number of households=56 Let , X= be the number of respondents said yes.=14 The…

Q: A sample of 100 adult women was taken, and each was asked how many children she had. The results…

A: As per our guidelines we are suppose to answer only three sub parts. From the given data the no.of…

Q: (a)  What is the level of significance? (Enter a number.) State the null and alternate hypotheses.…

A: Given: population mean = 4.30 sample standard deviation = 0.64 sample mean = 3.75 n=6 to find:…

Q: f. Report the test statistic. (Give answer to 4 decimal places) g. p-value = (Give answer to 4…

A: BrandDurability…

Q: reviewer checks to see if a bag of candy weighs less than advertised (e.g., 100 grams). What is the…

A: We have to determine which test statistic is appropriate for this situation.

Q: A reseacher is analyzing data from a repeated-measures research study. If the researcher ran a…

A: Let D=1st sample-2nd sample Using Excel, calculate the D. 1st 2nd D=1st-2nd 10 11 -1 4 6 -2…

Q: A random sample of shoe lengths of 11 persons were measured and listed below. 11.5 cm, 12.2 cm, 12.2…

A:

Q: Consider the sample consisting of the following nine results : 2.3, 7.2, 3.7, 4.6, 5.0, 7.0, 3.7,…

A: Compute the upper quartile, the data needs to be put into ascending order, as shown in the table…

Q: Calculate the first and third quartiles for these sample data. The first quartile is oz. (Type an…

A: The sample size is n=20n = 20. The provided sample data are shown in the table below: Weights…