When the necessary conditions are met, you are testing the hypotheses H0: (μ1 - μ2) = 0; H1: (μ1 - μ2) < 0.  But your statistical software provides only a one-tail area of 0.023 as part of its output. The p-value for this test will be: A. .023 B. .046 C. .092 D. .082

Q: A quality control analyst is verifying that the 1 lb bags of coffee are indeed 16 oz. He knows if it…

A: P value = 0.093Significance level = 0.05

Q: 58% of students entering four-year colleges receive a degree within six years. Is this percent…

A: Given,n=267x=139population proportion(P)=0.58and α=0.10

Q: A quality control analyst is verifying that the 1 lb bags of coffee are indeed 16 oz. He knows if it…

A: Test statistic=1.68P-value=0.093and =0.05

Q: hypothesis test is conducted with H0 : µ = 72 vs. Ha: µ ≠ 72. The hypothesis test sample finds  x̅…

A: This is a two tailed test as the direction of alternative hypothesis is "≠".

Q: It was determined that the percentage of t's in the English language in the 1800s was 6%. A random…

A: For the given data Perform Z test for one proportion

Q: A sample is counted for 10 minutes and results in 530 gross counts. A 30-minute background count…

A: question:   A sample is counted for 10 minutes and results in 530 gross counts. A 30-minute…

Q: ou are performing a left-tailed test. If α=.02α=.02, find the critical value, to three decimal…

A: Defined :  the test is a left-tailed test. and α=.02

Q: Suppose that we are testing H0: μ = μ0 versus H1: μ ≠ μ0. Calculate the P-value for the following…

A: given data H0 : μ = μ0H1 : μ ≠ μ0p value = ?

Q: Suppose you are testing Ho : μ = 104 against Ha μ< 104. From an SRS of 70 individuals, you compute =…

A: It is interpreted that, the study involves 70individuals (i.e., n sample size=70). And the sample…

Q: a trace evidence examiner elaborates as follows: "The viscose in our database is 0.1% (or 0.001) and…

A: given  The frequency of occurrence for orange viscose is 0.1%(0.001)

Q: (c) Find the standardized test statistic z. Z= (Round to two decimal places as needed.) an example…

A: Given that  Sample size n =300 Sample proportion p^=72%=0.72

Q: re lower in English college placement tests than the national average? A researcher obtained the…

A: As the population standard deviation is known, we will use z distribution. To determine, that the…

Q: You are testing H0​:μ=12 against Hl​:μ>12 based on an SRS of 26 observations. If the test statistic…

A: Given :              Hypothesis population mean = µ = 12              Sample Size = n = 26…

Q: A repeated measures study comparing two treatments with a sample of n=4 participants produces Md=4…

A:

Q: How would you report the results? The derived t = 0.74 was not significant at p = .05 with df = 19.…

A: The mean significant difference between the two sample and the population parameter for smaller…

Q: The calculated average for the validation sample is compared to the known value to determine the…

A: Solution: From the given information, the known value of NX is 4.60 mg/L and the average of NX is…

Q: You are conducting a study to see if the probability of a true negative on a test for a certain…

A: Claim :  The probability of a true negative on a test for a certain cancer is significantly more…

Q: Because npo (1-Po) = 85.3 > 10, the sample size is less than 5% of the population size, and the…

A: It is given that  p = 58% = 0.58 Favourable cases, X = 207 Sample size, n = 350

Q: You are performing a two-tailed test. If α=.005, find the positive critical value, to three decimal…

A: Normal distribution is a continuous distribution which has many real life applications. A standard…

Q: Photon is a training device that is designed to improve a user's reaction time. Similar devices have…

A: a) Denote p as the true proportion of athletes, who can score the top ranking of “light speed”.

Q: Suppose it was determined that the percentage of t's in the English language in the 1800s was 9%. A…

A: Given: n= 1000 ,x= 109.0 p= 0.09 ,significance level(∝)= 0.05 p̂= 109.0 / 1000

Q: = You wish to test Ho: M₁ = μ₂ versus Ha: ₁ μ2 at a = 0.05. You obtain a sample of size ₁ 15 with a…

A: From the provided information,

Q: In a test of H0: p = 0.8 against H1: p ≠ 0.8, a sample of size 1000 produces Z = 2.05 for the value…

A: Given HypothesisH0: p = 0.8 H1: p ≠ 0.8Sample size, n = 1000z = 2.05The p-value corresponding to z…

Q: Suppose you want to check whether a coin is fair or not. You flip the coin 100 times and get 54…

A: Given that  Number of times coin flipped (n) = 100 Number of times it got tails (x) = 54 Sample…

Q: The EPA maximum contaminant level (MCL) for arsenic is 10 micrograms per liter. (10ug/L). You wish…

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

Q: A statistician has a random sample of 30 observations from a population which has a normal…

A: It is interpreted that: σ population SD=5n sample size=30μ0 claimed population mean=0

Q: You are conducting a study to see if the typical doctor's salary (in thousands of dollars) is…

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

Q: I entered the data in my calculator and then went to 2 propTinterval but did not get the right…

A: Solution: The first thing is to prepare the data for the calculator. So here it is required to first…

Q: Ten determinations of the percentage of water in a certain solution yielded X¯ = 0.453% and S =…

A: Sample size n =10 Sample mean=0.453 Standard deviation =0.37

Q: α=0.002. μd=μ2-μ1 where the first data set represents a pre-test and the second data set represents…

A: 1. State the test hypotheses. Consider Difference =pre-test – post-test. Null hypothesis: H0:µd =0…

Q: You are conducting a left-tailed test of a claim about a population mean when sigma is unknown with…

A: Given, Sample size,n =37 degree of freedom =n-1=37-1=36 Population standard deviation(σ) is not…

Q: The ACT college test is normally distributed with µ = 21.0 and σ = 5.5. What proportion of students…

A: normal distribution,μ=21σ=5.5we have to find out the proportion for the given data.

Q: Sample of n = 9 individuals is selected from a population with p = 60 and o = 6, and a treatment is…

A: Given that, Sample size n=9 Population mean μ=60 Population standard deviation σ=6 Sample mean M=63

Q: Suppose you want to check whether a coin is fair or not. You flip the coin 200 times and get 82…

A: Given n=200 x=82

Q: A tax accountant would like to test the claim that the proportion of individuals who owe when filing…

A:

Q: In a test of H0:μ = 100 against H1:μ>100, a sample of size 80 producers z= 0.8 for the value of the…

A:

Q: If α=.005, find the critical value, to four decimal places.

A: Given data: n=32,  α=.005,  df=n-1=31 The given test is a left-tailed test.

Q: A researcher claims that the proportion of smokers in a certain city is less than 20%. To test this…

A: The random variable smokers follow binomial distribution. The population proportion is 0.20. The…

Q: A sample of 10  students took a class designed to improve their SAT math scores. Following are…

A: