your null and alternative hypothesis are: H0:μ=59H0:μ=59 H1:μ≠59H1:μ≠59 Then the test is: right tailed two tailed left tailed
Q: Ho: H₁: (Type integers or decimals. Do not round.) Find the test statistic. to = (Round to two…
A: Let be the population mean concentration of calcium in precipitation in Chautauaua, New York in…
Q: Find the p value for z two tailed test if test statistic is 5.4.
A: Given: Test statistic = 5.4 Test is two tailed.
Q: [t (47) = -8.21, p = .03] Based on the parenthetical statement given above, what is the sample size…
A: The t-critical value at 47 degrees of freedom is -0.82.
Q: A9 Assume we have observed samples ₁,...,100 from a normally distributed population with known…
A: (i) That is, there is no evidence to conclude that the population mean is different from 7. That…
Q: ate whether the standardized test statistic z indicates that you should reject the null hypothesis.…
A: Here critical region is below -1.285 So use this to identify whether reject null hypothesis or not
Q: The test statistic of z 2.00 is obtained when testing the claim that p 0.639. a Identify the…
A: It is given that, z =2.00 and researcher claim that p≠0.639
Q: 3. An airline president wants to find out if baggage fees have made a difference in how much people…
A: Solution: 3. Let X be the weight of the person’s luggage. From the given information, n=320,…
Q: 15. Interpret calculator display: The following TI-84 Plus calculator display presents the results…
A: The results obtained from a hypothesis test are: μ≠0 t=2.40285205 p=0.0296591111 Sx=5.61 n=16
Q: A recent study of 89 people showed they ate sandwiches (S) an average of 21.4 times and…
A: Solution-: Given: μ0=27.4,n=89,x¯=21.4,s=4.3, We take α=0.05
Q: Use Table 4 or SALT to approximate the p-value for the t statistic in the following situation.…
A: Givena)The test is two tailedt=-1.18degrees of freedom(df)=26
Q: 4. ACT composite scores are normally distributed with a p= 21. A sample of 25 students is randomly…
A:
Q: Follow the steps to calculate the Independent t-test and conduct a 2-tailed test with a = .05. Step…
A:
Q: Independent random samples were drawn from approximately normal populations. The sample means x1=…
A: We want to find a) find the value of the test statistic t. b) find the number of degrees of freedom…
Q: An independent measures study has n=12 participants in each of the two samples. if t=2.07, what…
A: An independent measures study has n=12 participants in each of the two samples. The t statistics for…
Q: Suppose there is a claim that a certain population has a mean, u, that is equal to 5. You want to…
A: Given information- Hypothesis Null Hypothesis: Ho: µ = 5 Alternative Hypothesis: H1: µ ≠ 5 We have…
Q: A random sample of 25 students were asked to self-identify as "statistics-lovers" or…
A: Here degree of freedom df=n1+n2-2 n1=16 n2=9 so Df=16+9-2 =25-2 =23
Q: Lisa wants to determine if graduates from her collegeearn different incomes than do graduates from…
A: Let μ denotes the population mean income of the graduates from Lisa's college. The average income is…
Q: uppose that we have a problem for which the null and alternative hypothesis are given by: H0: μ =…
A: Given that Null hypothesis H0: μ = 63.8 minutes. Alternative hypothesis H1: μ > 63.8 minutes.…
Q: Suppose a random sample of size n = 5 from a normal population gives mean = 183.1 and standard…
A: From the provided information, Sample size (n) = 5 Sample mean (x̅) = 183.1 Standard deviation (s) =…
Q: Researchers look at the role of music on anxiety. They believe the type of music will make a…
A: Solution: Given information: n1=14 Sample size of classical music groupn2=14 sample size of Tecno…
Q: A sample of n=9 athletes is taken from the SW population that has a M =29. Stress scores are…
A: State the hypotheses. That is, there is no sufficient evidence to conclude that the treatment…
Q: 19% of all college students volunteer their time. Is the percentage of college students who are…
A: The hypothesized proportion is 0.19.
Q: Normal DistributioOn Step 1: Select one-tailed or two-tailed. O One-tailed O Two-tailed 03- Step 2:…
A: we have given that null and alternative hypothesis and test statistic =1.762 p-value=0.078
Q: Consider Z = 3.4X+3.9Y where X and Y are independent normal random variables. The mean and variance…
A: As per given by the question, there are given expression Z=3.4X+3.9Y and mean and variance of x are…
Q: A sample of 32 observations is selected from a normal population. The sample mean is 32, and the…
A:
Q: A random sample of 25 students were asked to self-identify as "statistics-löVers" 8F…
A: Test statistic formula: t=M1-M2n1-1s12+n2-1s22n1+n2-11n1+1n2 Now substitute the given values in the…
Q: A sample of n = 10 scores has a mean of M = 3. What is ΣX for this sample?
A: Solution: From the given information, M=3 and n=10.
Q: Number 13
A: It is given that M is 6.4, SS is 162, n is 9 and level of significance is 0.05.a)The test hypotheses…
Q: A random sample of 25 students were asked to self-identify as "statistics-lovers" or…
A:
Q: 8.72 Given M = 88, M2 = 83, ty = 2.042, t = 2.040, and a two-tailed test %3D %3D %3D %3! with a =…
A: Given M=88, M2=83, tcv= tcritical =2.042 , t=2.04=test statistic Two tailed hypothesis Level of…
Q: Caffeine and sugar. A double-blind aized experiment assigned healthy undergraduate s to drink one of…
A: Given information: The data represents the descriptive statistics for four types of beverages.
Q: What is the absolute critical value at which you reject the null hypothesis? tcritical= 2.960 2.690…
A:
Q: Decide whether you would reject or fail to reject the null hypothesis in the following situations:…
A: The objective of the question is to determine whether we should reject or fail to reject the null…
Q: Q14. Choose the statement that best matches the conclusion of your two-tailed paired t test. Your…
A: Given that Choose the statement that best matches the conclusion of your two-tailed paired t test.…
Q: Before the semester began, Professor Keithley predicted that 15% of his philosophy students would…
A:
Q: Suppose that we have a problem for which the null and alternative hypothesis are given by: H0: μ =…
A:
Q: You are performing a left-tailed z-cest Ifa = .10, and your test statistic is z = 3.1. do you: O…
A: Given information- Significance level, α = 0.10 Value of test statistics z = -3.1 We have given a…
Q: Under what circumstances is a t statistic used instead of a z-score for a hypothesis test?
A: As per our honor code we will only answer first question. 1) There are two cases when we use t…
Q: Suppose I get a test statistic z = 2.34. If I am using a one tailed test, what is my p value? You…
A: Obtain the P-value for the test statistic z=2.34. The P-value for the test statistic z=2.34 is…
Q: If X is random variable with parameter mean = 3 variance 9 find 7... = Find P( x> 0) %3D
A: Given that X is a random variable with mean = 3 and variance = 9, then Z= (X - mean)/SD = (X - 3)/3…
Q: If the decision rule for a one-tailed test of hypothesis is given as: Reject Ho if z<-2.36. What…
A: The decision rule for a one-tailed test of hypothesis is given as: Reject Ho if z<-2.36 The value…
If your null and alternative hypothesis are:
H0:μ=59H0:μ=59
H1:μ≠59H1:μ≠59
Then the test is:
- right tailed
- two tailed
- left tailed
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- You are conducting a multinomial hypothesis test for the claim that the 4 categories occur with the following frequencies: Complete the table. Category A B C D 40 32 Observed Expected Squared Frequency Frequency Residual 10 Ho: PA 21 = 0.5; PB = 0.3; pc = 0.1; PD = 0.1 What is the chi-square test-statistic for this data? x² = Report all answers accurate to three decimal places.for a two tailed test, if z=2.04, find the p valueSuppose there is a claim that a certain population has a mean, H, that is different than 5. You want to test this claim. To do so, you collect a large random sample from the population and perform a hypothesis test at the 0.10 level of significance. To start this test, you write the null hypothesis, Ho, and the alternative hypothesis, H1, as follows. Hg: u= 5 H1: u=5 Suppose you also know the following information. The value of the test statistic based on the sample is 1.506 (rounded to 3 decimal places). The p-value is 0.132 (rounded to 3 decimal places). (a) Complete the steps below for this hypothesis test. Standard Normal Distribution 04 Step 1: Select one-tailed or two-tailed. O One-tailed O Two-tailed 0.3+ Step 2: Enter the test statistic. (Round to 3 decimal places.) 0.2 Step 3: Shade the area represented by the p-value. 0.1+ Step 4: Enter the p-value. (Round to 3 decimal places.) ? (b) Based on your answer to part (a), which statement below is true? Since the p-value is less…
- The null and alternate hypotheses are: He: P₁ =H₂ H₁ H₁ #P₂ A random sample of 15 observations from the first population revealed a sample mean of 350 and a sample standard deviation of 12. A random sample of 17 observations from the second population revealed a sample mean of 342 and a sample standard deviation of 15. The population variances are assumed to be equal. At the 0.10 significance level, is there a difference in the population means? a. Is this a one-tailed or a two-tailed test? O One-tailed test. OTwo-tailed test. b. State the decision rule. (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.) The decision rule is to reject H0 if t65 homeless people in San Jose were asked their age. The sample mean age was 33.2 years. Let x be a random variable representing ages of homeless people in San Jose. Assume that x has a normal distribution and o = 7.3 years. Do the data indicate that the mean age of the population of homeless people in San Jose is less than 35 years old? Use a = 0.05. Identify the following in your answer. 1. Identify the null hypothesis Ho and alternate hypotheses H, for the problem. 2. Identify the sample statistic, test statistic, p-value and calculator key used: Sample Statistic (sample mean) (Stated in problem) = Test Statistic (z) (Round to two decimal places) %3D P-value: (Round to four decimal places) = Calculator key used: 3. Identify the significance level and determine if you reject or fail to reject the null hypothesis. significance level = Do you reject or fail to reject Ho ? 4. State your conclusion. Upload your answer. Remember you can only upload one document. Upload Choose a FileQ1: A researcher was interested in the effect of exercise on stress levels. For the general population, the distribution of the Stress Battery Scale scores is normal with the mean of µ = 25 and the standard deviation of σ = 5. A sample of n = 100 participants was asked to exercise for three weeks and then reported their stress levels. The sample mean was ?X = 23. Conduct a hypothesis test and determine the effect of exercise. Use the two-tailed test α = .01 1.Type the null and research hypotheses in complete sentences. 2.Cut off points 3.Standard error and z-score -show your computation process 4.Your conclusion thoroughly.
- Suppose there is a claim that a certain population has a mean, 4, that is different than 9. You want to test this claim. To do so, you collect a large random sample from the population and perform a hypothesis test at the 0.05 level of significance. To start this test, you write the null hypothesis, Ho, and the alternative hypothesis, H1, as follows. Hg: 4= 9 H: u=9 Suppose you also know the following information. The value of the test statistic based on the sample is -2.044 (rounded to 3 decimal places). The p-value is 0.041 (rounded to 3 decimal places). (a) Complete the steps below for this hypothesis test. Standard Normal Distribution 04 Step 1: Select one-tailed or two-tailed. O One-tailed Two-tailed 0.3+ Step 2: Enter the test statistic. (Round to 3 decimal places.) 0.2+ Step 3: Shade the area represented by the p-value. 0.1+ Step 4: Enter the p-value. (Round to 3 decimal places.) ? (b) Based on your answer to part (a), which statement below is true? O since the p-value is less…The mean height of a certain kind of plant is 170 centimeters. Suppose we want to carry out a hypothesis test to see if the mean height when these plants are treated with a certain chemical differs from 170. State the null hypothesis H0 and the alternative hypothesis H1 that we would use for this test.Under what circumstances is a t statistic used instead of a z-score for a hypothesis test? Justin wants to know whether a commonly prescribed drug does improve the attention span of students with attention deficit disorder (ADD). He knows that the mean attention span for students with ADD who are not taking the drug is 2.3 minutes long. His sample of 12 students taking the drug yielded a mean of 4.6 minutes. Justin can find no information regarding σx , so he calculated s2x =1.96. Determine the critical region using a one-tailed test with alpha = .05. Conduct the hypothesis test (Do the math and compare the t-critical and t-obtained values). State your conclusions in terms of H0 (Should you reject the H0 or fail to reject/accept the H0). Based on your analysis, is there a relationship between the drug and attention span?
- The test statistic for a left-tailed test is z=-1.42. Solve for the P-value.Number 5Suppose that we have a problem for which the null and alternative hypothesis are given by: H0: μ = 890. H1:μ ≠ 890. Is this a right-tailed test, left-tailed test, or two-tailed test. Find the z value based on a level of significance of α=.09.