Imagine that your null hypothesis is σ2 = 10 and your alternative hypothesis is σ2 > 10. What is the critical value for the test statistic  given α = 0.05 and n = 12?

Q: A well-known brokerage firm executive claimed that 10% of investors are currently confident of…

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Q: In a clinical trial, 17 out of 900 patients taking a prescription drug complaint of flu like…

A: From the provided information, Sample size (n) = 900 Out of which 17 patients taking a prescription…

Q: What is the t critical value for a two-tailed test, with α = 0.05 and n = 10

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

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Q: The probability of the data under the model of the alternative hypothesis (model 1) is 0.0008 and…

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Q: A well-known brokerage firm executive claimed that 50% of investors are currently confident of…

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Q: For the following ANOVA null hypothesis: U= P2=P3= H4= P5, The number of treatments in this…

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Q: If the p-value is greater than alpha, we will. reject the null hypothesis and accept the alternative…

A: If the P-value is greater than alpha, we do not have sufficient evidence to reject the null…

Q: (b) If the researcher decides to test this hypothesis at the a = 0.05 level of significance,…

A: Here Given Sample size=n=19

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: 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: 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: Imagine that your null hypothesis is μ = 16 and your alternative hypothesis is μ ≠ 16 for a…

A: It is given that the test is two-tailed. Level of significance is 0.05 Degrees of freedom is 19–1…

Q: A researcher conducts a two-tailed hypothesis test with an alpha of 0.05 and obtains a z statistic…

A: The test is two-tailed.

Q: Suppose we take a random sample from a population with mean u and variance o?. Let X1 and X2 be the…

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Q: For a hypothesis test with alpha level held constant, as sample size increases the critical values…

A: For a hypothesis test with alpha level held constant, as sample size increases.

Q: A well-known brokerage firm executive claimed that 90% of investors are currently confident of…

A: Given:  n= 200.0 p= 0.9 , p⏜= 0.85significance level(∝)= 0.05

Q: What are the critical t values for a one tailed hypothesis test with alpha=0.01 and a sample of n=30…

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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: . Is there sufficient evidence at the 0.05 level of significance that the average years of…

A: To test whether there is sufficient evidence at 0.05 level of significance that the average years of…

Q: In a hypothesis test, assuming the conventional critical value for evaluating p-values of 0.05, a…

A: We have given that  P-value  greater than level of significance ( alpha ) = 0.05 Alpha = level of…

Q: In a clinical study of an allergy drug, 108 of 202 subjected reported experiencing significant…

A: Given information- Sample size, n = 202 Significance level, α = 0.01 Sample proportion is-

Q: What is the smallest alpha that you CAN reject the null hypothesis under when you have a p-value of…

A: The level of significance can be defined as the probability of rejecting the null hypothesis when it…

Q: The test statistic of z = 2.47 is obtained when testing the claim that p > 0.8. Identify the…

A: Given, The test statistic of z = 2.47 is obtained when testing the claim that p &gt; 0.8. The…

Q: Historically, the proportion of people who trade in their old car to a car dealer when purchasing a…

A: use the theory of testing of proportion .using Z test

Q: f we set the criterion probability (alpha) at .05, and we are conducting a one-tailed test where we…

A: Significance level α=0.05 We are conducting a one tailed test, where we are testing attitude scores…

Q: When the p-value is greater than alpha, the conclusion for the hypothesis test is to reject the null…

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Q: Daily anxiety was measured on a scale from 1 (not at all anxious) to 5 (very anxious) in a random…

A: Interpretation:The 95% confidence interval can be interpreted as follows:One can be 95% confident…

Q: Use the critical value method to test the null hypothesis Ho: B₁=0 versus H₁ : B₁ #0. Use the a=0.05…

A: Given: n=25se=149.08∑x-x¯2=69.27b1=31.32

Q: Your null hypothesis is μ = 12 and your alternative hypothesis is μ ≠ 12 for a population with…

A: It is given that the mean is 12, n is 15 and the level of significance is 0.01.

Q: A random sample of 54 students from Cabrillo College are selected from a normal population with mu…

A: We have  to find Given the test statistics .

Q: The test statistic z=1.42 is obtained when testing the claim that p>4 a) find the p value B) using…

A: GivenTest statistic(z)=1.42claim is p&gt;4

Q: The test statistic of z=1.93 is obtained when testing the claim that p>0.2. a. Identify the…

A: From the provided information, a) The hypotheses can be constructed as: H0: p = 0.2 H1: p &gt; 0.2…

Q: Suppose Y - N(4,02) where both parameters are unknown. From 11 independent observations, we…

A: Null hypothesis: The average weight has gone down. H0 : μ = 0.5. Alternative hypothesis: H1 :μ  ≠…

Q: What would our cutoff Z-score be if we want to do a two-tailed test and use an alpha of .01?

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Q: the proportion of people who dream in color is different than the proportion in the 1940’s? What is…

A: Given : In a recent study of a random sample of 113 people, 92 reported dreaming in color. In the…

Q: what is the null and alternative hypothesis?

A: Here use basic of hypothesis testing  Here test the claim that proportion of new car buyers that…

Q: If the decision rule for a one-tailed test of hypothesis is given as: Reject Ho if z&lt;-2.36. What…

A: The decision rule for a one-tailed test of hypothesis is given as: Reject Ho if z&lt;-2.36 The value…

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: The manufacturer of a new antidepressant claims that, among all people with depression who use the…

A: The random variable is people who find relief from depression. The population proportion is 65%. The…

Q: Use the given information to find the ​p-value. ​Also, use a 0.05 significance level and state the…

A: From the given information, it can be observed that the test statistic is 3.06 and the level of…

Q: If you want to carry out a statistical test at α = 0.01. to test whether the population mean is…

A: Given : Sample size = n = 300 Z-value = 1.97 Level of significance = 0.01

Q: why are large x2 values sometimes obtained when the null hypothesis true?

A: A large chi-square value indicates that the data does not fit very well, that is, there is no…

Q: uppose in a hypothesis testing, we obtained a pp-value of 0.003.  Which of the following is/are…

A: he correct is D that is this pp value indicates a big effect size. p value is basically the is the…

Q: A two-tailed hypothesis test is being used to evaluate a treatment effect with α = .05. If the…

A: We have given that  A two-tailed hypothesis test with α = 0.05 and z-score is -2.24

Q: o evaluate the effect of a treatment, one sample of n=8 is obtained from a population with…

A: 1 Formulating the null and alternative hypotheses,                            Ho:   u   =   40  Ha:…

Q: Use the given information to find the ​p-value. ​Also, use a 0.05 significance level and state the…

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Q: The test statistic of z=0.74 is obtained when testing the claim that p≤0.3.   a. Identify the…

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Q: The test statistic of z = 0.85 is obtained when testing the claim that p > 0.2. Identify the…

A: State the hypotheses.   Identify the tail of the test.   The tail of the test is determined below…