What is the observed test statistic for this test?

Q: 2. Consider the following null and alternative hypothesis. H₂:μ = 120 versus H₂:μ> 120 A random…

A:

Q: A city office has previous records indicating that 18% of cars have received parking tickets at some…

A: Given Information: 18% of cars have received parking tickets at some point. A new program was…

Q: Under what circumstances is the t statistic used instead of the Z score for a hypothesis test?

A: The t statistic is used when the population standard deviation or population variance is not known.…

Q: If the p-value found in an experiment is 0.85. We reject the null hypothesis. True False

A:

Q: A statistical test of hypothesis produces the P-value P = 0.221.  Will the null hypothesis be…

A: Given,P-value=0.221level of significance (α)=0.10

Q: You're running a one-sample t-test comparing your sample (M - 22.2, SD = 3.5) of 15 observations…

A: Given: Sample mean M=22.2. Standard deviation SD=3.5. Hypothesize mean μ =22.5. Level of…

Q: A decade-old study found that the proportion, p, of high school seniors who believed that "getting…

A:

Q: university claims that their employment rate directly after graduation is 70%. In a sample of 300…

A: We conduct Z test for proportion.

Q: A sample of n=25 individuals is randomly selected from a population with a mean of p=65, and a…

A: Given that   x̄ =70 ,  μ = 65  , s = 20 , n =25   Test statistic ( t  )  t = ( x̄ -  μ  )/(s/√(n)

Q: Assuming that all the assumptions of statistical hypothesis testing are met, based on the z-score of…

A:

Q: 3. For the alpha and observed significance level (p-value) pair, indicate whether the null…

A: 3. The significance level is 0.05, and p-value is 0.001. Decision rule: If p-value≤α, then reject…

Q: Two different simple random samples are drawn from two different populations. The first sample…

A: The following is the formula for the difference of two populations                          i.e.,…

Q: g. With which p level-0.05 or 0.01 reject the null hypothesis? Explain.

A: While conducting a Z-test, the 6 steps of hypothesis testing are: i) Identifying the population and…

Q: What is the p-value and the correct decision for this   test?

A: Given : n=50 , X=18 , p0=0.40 , α=0.05 Our aim is to find the p-value and the correct decision for…

Q: A state-by-state survey found that the proportions of adults who are smokers in state A and state B…

A: The following information is provided. Number of respondent from each state is 3000. n1=n2=3000 The…

Q: d in testing if this sample provides evidence that the proportion of Americans who are dissatisfied…

A: Consider the null hypothesis H0 and alternate hypothesis Ha given as: H0:μ=0.5Ha:μ≠0.5 Given,…

Q: You collect a random sample of 100 children and compute X¯X¯= 47.5 inches, the average height in…

A: The sample size is 100, sample mean is 47.5, sample standard deviation is 6, and population mean is…

Q: An independent samples study uses two samples each with n=8 participants. If the data produce a…

A:

Q: With a p value of .04 and an ⍺ of .05, should you reject or fail to reject the null hypothesis?"

A: Given that: p-value= 0.04 ⍺=0.05

Q: In a hypothesis test with hypotheses H0 : P greater than equal 0.76 and H1 : P less than 0.76 , a…

A: Denote p as the true population proportion. The null and alternative hypotheses are: Null…

Q: A publisher reports that 48 % of their readers own a personal computer. A marketing executive wants…

A: The publisher reports that 48% of their readers own a personal computer.

Q: A book club wonders if fewer than 40 percent of students at a local university had read at least one…

A: Test hypothesis: Denote the population proportion of students at a local university who had read at…

Q: Only 16% of registered voters voted in the last election. Will voter participation increase for the…

A: It is given in the question that only 16% of registered voters voted in the last election.  Recently…

Q: Test the claim that the proportion of people who own cats is larger than 20% at the 0.10…

A: From the provided information, Sample size (n) = 700 Sample proportion (p̂) = 0.26 Level of…

Q: Two types of plastic are suitable for an electronics component manufacturer to use. The breaking…

A:

Q: 2. Consider the following null and alternative hypothesis. Η : μ = 120 versus Ha: μ > 120 A random…

A: GivenThe null and alternative hypothesis isH0:μ=120Ha:μ>120sample size(n)=81sample…

Q: A researcher administers a treatment to a sample from a population with a mean of m=50. If the…

A: Claim : the treatment is expected to increase scores.

Q: Suppose a sample size of 103 was used to conduct a left tailed hypothesis test for a single…

A: Given Information:  Sample size (n) = 103  Hypothesis: Ho: u = 22  p-value = 0.04

Q: An experiment is conducted to test the claim that James Bond can taste the difference between a…

A: The null hypothesis states that there is no difference between populations or a set of given…

Q: With H1: p < 0.32, a test statistic is z = -1.23.  Use a 0.01 significance level to find the…

A: Given that,null,  Ho:p=0.32  alternate,  H1: p&lt;0.32level of significance, alpha = 0.01

Q: Suppose you want to test the claim that , <H. Two samples are randomly selected from each…

A: The decision for the given claim is fails to reject the null hypothesis.

Q: Marco conducts a hypothesis test and calculates that his sample results have a p-value of .052, what…

A: Let us assume that level of significance, α=0.05 Given, p-value =0.052

Q: A teacher giving a true/false test wants to make sure her students do better than they would if they…

A: It is given that the level of significance is 0.10.

Q: If, in a​ (two-tail) hypothesis​ test, the​ p-value is 0.0921​, what is your statistical decision if…

A:

Q: Suppose we want to test the null hypothesis H0 : p = 0.34 against the alternative hypothesis H1 : p…

A: Solution Given hypothesis H0 : p = 0.34 against H1 : p &lt; 0.34 Sample=x=120 N = 300 P(cap) =…

Q: Only 10% of registered voters voted in the last election. Will voter participation change for the…

A: Given that,possible chances (x)=28sample size(n)=313success rate ( p )= x/n = 0.0895success…

Q: If a researcher obtained a P-value of 0.01 for a hypothesis test that has a significance level of…

A: The P-value is 0.01.

Q: A sample is selected from a population with a mean of m = 30 and a treatment is administered to the…

A: Given information: μ=30 According to the researcher, the treatment is expected to increase scores.

Q: The test statistic of z equals=0.99 is obtained when testing the claim that p greater than &gt;0.2…

A: Given information- Significance level, α = 0.01 The value of test statistics is z = 0.99 Null…

Q: The body weight of a healthy 3-month-old colt should be about u = 66 kg. (a) If you want to set up a…

A: From the provided information, Population mean (µ) = 66 kg

Q: , what is the test statistic and p-value?

A:

Q: Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires…

A:

Q: In a hypothesis test with hypotheses Ho :p 2 0.76 and H1 :p < 0.76, a random sample of size 979…

A: Given data sample size, n =979

Q: Lillie conducts a hypothesis test and calculates that her sample results have a p-value of .0043,…

A: Given: p value = 0.0043 Assumed level of significance α=0.05

Q: What is the observed test statistic for this   test?

A:

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A:

Q: If, in a​ one-tail hypothesis test where H0 is only rejected in the upper​ tail, the p-value=0.6792…

A: Given information: In a​ one-tail hypothesis test where H0 is only rejected in the upper​ tail, the…

Q: A university claims that their employment rate directly after graduation is 80%. In a sample of 700…

A: Given that, x=609,n=700 The sample proportion is,

Q: In a survey taken in 2020, 20 out of 50 women and 17 out of 45 men said that they felt our country…

A: Given , Women sample : Sample size = n1 = 50 Number of women who felt our country was headed in the…