represents the alternative hypothesis

Q: A p-value of 0.02 means that you must: a. Reject the null hypothesis b. Accept the null hypothesis…

A: Given problem Given that   A p-value of 0.02 means that you must : Ans) Option d Recode your…

Q: The recommended daily Calcium intake for women between the ages of 21 and 50 is 1000 mg per day. The…

A: Statistical tests are used to calculate the test statistic and p-value. This calculated test…

Q: In a one-tail test, the p-value is found to be equal to 0.0026. If the test had been two-tailed, the…

A:

Q: The height of men in the US in 1950 was normally distributed with u = 177.1 cm and o = 7 cm The 5%…

A: The height of men in the US in 1950 was normally distributed with µ = 177.1 cm and σ = 7 cm.

Q: Identify the type I error and the type Il error that corresponds to the given hypothesis. The…

A: Given : The proportion of people who write with their left hand is equal to 0.32

Q: As a researcher using ANOVA, in order to reject the null hypothesis, we need the F ratio to be:…

A: F- test for ANOVA: The F test is to determine whether the means of more than two groups are equal.…

Q: For a certain year a study reports that the percentage of college students using credit cards was…

A: Given that,possible chances (x)=40sample size(n)=50success rate ( p )= x/n = 0.8success…

Q: A population with a mean of u = 8 has EX = 40. How many scores are in the population?

A: It is given that the mean is 8 and sum of X is 40.

Q: With H1: p + 0.3827, the test statistic is z = %3D 2.324. For 0.1 significance level what are the…

A: Given : H1 : P ≠0.3827 Z = 2.324 Level of significance = 0.1

Q: In a test of H0: µ=150 against HA: µ<150, a sample of size 250 produces Z = -0.65 for the value…

A: The z statistic value is –0.65. Step-by-step procedure to obtain the p-value using standard normal…

Q: The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day.…

A: Givensample size(n)=119Mean(x)=12.9standard deviation(s)=6.61α=0.05

Q: The average annual miles driven per vehicle in the United States is 11.1 thousand miles, with σ ≈…

A: Given data Hypothesized mean = 11.1 Thousand miles Sample mean = 10.9 Thousand miles Sample size =…

Q: Last year the mean cost u for a one-bedroom rental in a certain city was $1,200 per month. Eli is…

A: We have to find correct hypothesis.

Q: A researcher conducts a hypothesis test using a sample of n = 20 with M = 34 and s 2 = 36 from an…

A: The test is conducted for samples from unknown population. The appropriate test for this scenario is…

Q: medical researcher claims that the proportion of people taking a certain medication that develop…

A:

Q: In testing H0: zippity-do-dah against H1: winter is coming, with a 5% level of significance, the…

A:

Q: If you want to show that the use of vitamin C reduces the mean time to recover from a common cold,…

A: Given that For no vitamin, sample size n1 = 32, sample mean = 6.3, and sample SD = 2.7 For vitamin…

Q: proportion of people taking a certain medication that develop serious side effects is 12%. To test…

A:

Q: A large national union claims that the proportion of women in the union is significantly different…

A: Denote p as the true proportion of women in the union.

Q: A random sample of  n= 4 individuals is selected from a population with μ = 35, and a treatment is…

A: a. A sample of 4 individuals is selected from a population with mean 35. The sample mean and sum of…

Q: For each of the following scenarios, identify: the population of interest, the outcome variable…

A: Given: Two scenarios

Q: A two-sample t-test for a difference in means was conducted to investigate whether there is a…

A: Given: Test Statistic = 2.201 P-value = 0.027

Q: The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day.…

A:

Q: To increase the chance of rejecting the null hypothesis, we must ensure that F-test is large enough…

A: Q1.  Answer is  (B).    Reason:   Null hypothesis : mean of groups are equal.  So we reject null…

Q: Two researchers are testing the null hypothesis that a population proportion p is equal to 0.30, and…

A: The given null and alternative hypotheses are: H0:p=0.30H1:p=0.30 The sample proportion for…

Q: A researcher predicts that scores in treatment A will be higher than scores in treatment B. If the…

A: Step 1: It is given that the researcher predicts that scores in treatment A will be higher than the…

Q: A researcher is using a one-tailed hypothesis test with α = .01 to evaluate the effect of a…

A:

Q: A medical researcher claims that the proportion of people taking a certain medication that develop…

A:

Q: A survey of 90 recently delivered women on the rolls of a county welfare department revealed that 27…

A: We want to find the Zcritical

Q: Suppose you test the claim that people (on average) spend less than 10 seconds washing their hands,…

A: Given: The researcher claims that the people (on average) spend less than 10 seconds washing their…

Q: A researcher conducts an independent-measures study comparing two treatments and reports the t…

A:

Q: According to a food​ website, the mean consumption of popcorn annually by Americans is 63 quarts.…

A: a.The null and the alternative hypotheses that would be used to test the effectiveness of the…

Q: A researcher who wants to know whether the proportion of male births in a hospital is different from…

A: a) The alternative hypothesis is H0:p≠0.51.

Q: When having a baby, assume that the probability of having a boy is 50% and the probability of having…

A: Amswer: See the answer below:

Q: In general, when people diet they typically lose 10 lbs. (?σ = 2). A random sample of 16 people on…

A: It is given that the population mean is 10 lbs and the population standard deviation is 2.

Q: Two samples, each with n = 9 scores, produce an independent-measures t statistic of t = 2.00. If the…

A:

Q: In a test of H0:p=0.4 against Ha:p≠0.4, a sample of size 100 produces z=1.28 for the value of the…

A:

Q: For item d, use the decision below as your reference. The null hypothesis was not rejected, and it…

A: The following information has been given: Null Hypothesis : there is no impact of organic food on…

Q: The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day.…

A: We have given that  Sample size n =116 Sample mean = 12.5  Standard deviation =6.35 Level of…

Q: Biologists were studying the proportions of cats that had spotted markings on their fur in two…

A: P-value illustrates the conditional possibility of getting an outcome that is equal to or more…

Q: Formulate the null and alternative hypothesis and identify the type of test. Tge manufacturer if a…

A: Given: μ= average nicotine content=2.5

Q: Identify the type I error and the type ll error that corresponds to the given hypothesis. The…

A: Null and alternative hypotheses: The hypothesis which is tentatively fixed up under and tested for…

Q: The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day.…

A:

Q: In a test of H0: µ=10 against HA: µ<10, a sample of size 100 produces Z = -2.01 for the value of…

A: Given HypothesisH0: µ=10HA: µ<10Sample size n =100Z = -2.01The p-value corresponding to z = -2.01…

Q: A population with a mean of u = 8 has EX 40. How many scores are in the population?

A: From the provided information, Mean (µ) = 8 ∑X = 40

Q: In a random sample of  320  cars driven at low altitudes,  50  of them exceeded a standard of  10…

A:

Q: The research examining the effects of preschool childcare has found that children who spent time in…

A:

Q: What is the critical t score if you are testing a one-tailed hypothesis, α level of .05 with df =…

A: From the given information we want to find the t critical value at Alpha level of 0.05 and df = 36

Q: Your local gas company is interested in estimating the average usage during the month of January. A…

A:

Q: An Internet provider is trying to gain advertising deals and claims that the mean time the…

A: Here the Claim is : An Internet provider claims that the mean time the competitors' customers spend…