What is the p-value and the correct decision for this test?
Q: I’m testing the claim that a population exceeds .62, the null hypothesis is H0, what is it?
A: H0 = Null Hypothesis H1 = Alternative Hypothesis
Q: A random sample of 150 recent donations at a certain blood bank reveals that 88 were type A blood.…
A:
Q: You are asked to test the null hypothesis at the .05 level of significance and you end up with…
A: It is given that the z-observed value is -1.83.
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: We would like to compare the proportions of Notre Dame Seniors who choose to live off-campus by…
A: The claim of the test is to test whether the proportion of seniors living off-campus is…
Q: In conducting a significance test, is it easier or harder to reject the null hypothesis when the…
A: Decision rule :Reject Null hypothesis if z statistic > zα/2 critical value at α level of…
Q: Historically, the percentage of U.S. residents who support stricter gun control laws has been 55%. A…
A: From the provided information, Sample size (n) = 2500 From which 1723 are in favor of stricter gun…
Q: The critical boundaries for a hypothesis test are z = +1.96 and -1.96. If the z-score for the sample…
A: Here critical value= +-1.96 Test statistics z = 2.20
Q: Assuming that all the assumptions of statistical hypothesis testing are met, based on the z-score of…
A:
Q: Suppose we want to test the null hypothesis H0 : p = 0.60 against the alternative hypothesis Ha : p…
A: Given that Null hypothesis H0: P=0.60 Alternative hypothesis H1: P<0.60 [ Left tailed test ]…
Q: Suppose a researcher is testing the hypothesis Hn: p= 0.6 versus H,: p<0.6 and she finds the P-value…
A: Given : P-value = 0.28
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: he body weight of a healthy 3-month-old colt should be about μ = 62 kg. (a) If you want to set up a…
A:
Q: Suppose a researcher is testing the hypothesis Hn: p=0.6 versus H,: p<0.6 and she finds the P-value…
A: The random variable X follows normal distribution. We have to test whether the population proportion…
Q: Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires…
A:
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: A sample of n=25 individuals is randomly selected from a population with a mean of u=65, and a…
A: For the given data perform t test for one mean
Q: Find the P-value for a left-tailed hypothesis test with a test statistic of z=−1.42. Decide…
A: P( z < -1.42 ) = NORMSDIST( -1.42) ------ Excel function = 0.0778…
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: If you use a 0.05 level of significance in a two-tail hypothesis test, what decision will you make…
A: Note: Thank you for the question. Since multiple questions are posted, according to our policy, we…
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<0.32level of significance, alpha = 0.01
Q: Does this data provide statistically significant evidence that there is a difference in the…
A: For Hispanic adults, sample size n1 = 640 and sample proportion is 4.6% = 0.046 For white adults,…
Q: A certain university claims that for the last school year the proportion of students who were not…
A: Given that Claim : The proportion of students who were not able to earn a college diploma is at…
Q: Two different simple random samples are drawn from two different populations. The first sample…
A: We have find critical value...
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: Explain whether or not rejecting the null hypothesis makes the alternative hypothesis true and why.…
A: 1). It is known that null and alternative hypotheses are contradicting (opposite to) each other.…
Q: If, in a (two-tail) hypothesis test, the p-value is 0.0921, what is your statistical decision if…
A:
Q: The the P-value, the stronger the evidence against the null hypothesis provided by the data. A)…
A:
Q: About 778000 male and 886000 female high school students took the SAT in 2012. We suspect the…
A: Hi, we are supposed to answer three subparts at a time. Since you have not mentioned which subpart…
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 < 0.34 Sample=x=120 N = 300 P(cap) =…
Q: harder to reject the null hypothesis when the sample size is 1,500 compared to a sample size of…
A: The power of a test is the probability of making a correct decision, i.e., probability of rejecting…
Q: t is more difficult to reject a null hypothesis if we use a 10% level of significance compared with…
A: Given that Rejection of null hypothesis Level of significance (α)= 0.10 Level of significance (α) =…
Q: If the level of significance in a hypothesis test is 1 %, what would the p-value have to be for…
A: We fail to reject the null hypothesis when the p value is greater than the significance level. We…
Q: What is the observed test statistic for this test?
A: Given : n=20 , X=12 , p0=0.60 , α=0.01 Our aim is to find the value of the observed test statistic…
Q: Past studies have indicated that the percentage of smokers is estimated to be about 35%. Given the…
A: a) From the given information, the claim of the problem is the percentage of smokers has reduced.…
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: , what is the test statistic and p-value?
A:
Q: The test satistic of z=-2.81 is obtaines when testing the claim that p=2/3. a. Using a significance…
A:
Q: a) Write the null hypothesis and the alternative hypothesis. b) Based on the sample mean, the salmon…
A: The provided sample mean is Xˉ=0.07\bar X = 0.07 and the sample standard deviation is s=0.02s =…
Q: Assess the evidence against the null hypothesis if the P-value of the hypothesis test is 0.062.
A:
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: If the p-value of a hypothesis test is equal to 0.035, then the null hypothesis will be rejected for…
A: Answer - If the p-value of a hypothesis test is equal to 0.035, then the null hypothesis…
Q: When is a researcher at risk of making a type 2 error? whenever H0 is rejected whenever H1 is…
A: When is a researcher at risk of making a type 2 error? A type II error that describes the error…
Q: Solve the problem. 13) A researcher wants to know whether athletic women, on average, are more…
A: 13) Let μ1 denotes the population mean exercised athletic women, and μ2 denotes the population mean…
Q: When asked what it means for the result of a hypothesis test to be practically significant (or…
A: Given that When asked what it means for the result of a hypothesis test to be practically…
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…
Suppose we want to test the null hypothesis H0 : p = 0.40 against the alternative hypothesis Ha : p < 0. Suppose also that we observed 18 successes in a random sample of 50 subjects and the level of significance is 0.05. What is the p-value and the correct decision for this test?
Step by step
Solved in 3 steps
