​A researcher conducts a hypothesis test to evaluate the effect of a treatment. The hypothesis test produces a z-score of z = 2.37. Assuming that the researcher is using a two-tailed test, what decision should be made?

Q: In a study to test the effectiveness of barbless fishing hooks, 855 fish were caught with this type…

A: Here a from the left tailed hypothesis test for testing the effectiveness of barbless fishing, we…

Q: State the appropriate null and alternative hypothesis and find the critical value for a left-tailed…

A: Given Information: Significance level α = 0.10  Sample size (n) = 23 Population standard deviation σ…

Q: In the past, the mean running time for a certain type of flashlight battery has been 8.3 hours. The…

A: Given information- Null Hypothesis, H0: μ = 8.3 Alternate Hypothesis, Ha: μ > 8.3 a) Type 1 error…

Q: Test the claim that the proportion of men who own cats is smaller than the proportion of women who…

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Q: Then the test is: two tailed left tailed right tailed

A: Test is that if the accuracy rate for fingerprint identification is significantly less than 0.34 And…

Q: II. Conduct a hypothesis test A research center claims that less than 50% of senior high school…

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Q: State the null and alternative hypothesis for a test to determine the validity of the claim b)…

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Q: -Identify the hypothesis test as being two-tailed, left-tailed, or right-tailed. . Find the P-value.…

A: Claim : p > 0.3 The value of test statistic is z = 0.59 Level of significance = 0.01

Q: A researcher did a one-tailed one-sample t-test to test the hypothesis that babies prefer the color…

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Q: Pls answer. Crossword. "Statistical terms relevant to hypothesis testing"

A: The blanks has to be filled with "Statistical terms relevant to hypothesis testing".

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

A: We have to find correct decision for question.

Q: a. Use a one-tailed test with a = .05 to determine whether these data are sufficient to conclude…

A: 10. The given values are nH=27,MH=7.41,SSH=749.5, and nL=27,ML=4.78,SSL=830.

Q: In the absence of compelling reasons for a one-tailed test, which test must be used?

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Q: A psychologist specializing in marriage counseling claims that, among all married couples, the…

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Q: Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. At one school, the average…

A: As per our guidelines we are supposed to answer only one question per post. Given that, Mean (μ) =…

Q: researcher wants to test the null hypothesis Ho:p= 0.79 against the alternative H,:p > 79. A sample…

A: Given that  Test statistic z =3 Population proportion p=0.79 P-value =0.0001

Q: A 2011 survey, by the Bureau of Labor Statistics, reported that 91% of Americans have paid leave. In…

A: Given Information:  The resulting p-value is 0.0271; thus, the null hypothesis is rejected. It is…

Q: A 2011 survey, by the Bureau of Labor Statistics, reported that 91% of Americans have paid leave. In…

A: Type I error: The type I error occurs when rejecting the null hypothesis when it is true. It is…

Q: A group of doctors wishes to determine whether the average body temperature of their patients is…

A: Given information: The level of significance is α = 0.05. Given that the P-value is P-value =…

Q: A 2011 survey, by the Bureau of Labor Statistics, reported that 91% of Americans have paid leave. In…

A: The claim of the test is, that whether the proportion of people who have paid leave from 2011 to…

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

A: Probability distribution Plot instructions for drawing 1.graph 2.probability distribution plot…

Q: Find the P-value for a left-tailed hypothesis test with a test statistic of z= - 1.79. Decide…

A: The test statistic is given by Z = -1.79 Level of significance = 0.10

Q: An independent-measures research study examines gender differences in toddlers’ verbal skills. The…

A: Here, the level of significance is 0.05.

Q: A tv network claims that more than 60% of their viewer comes from NCR. What could be the type I and…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Test the claim that the proportion of people who own cats is significantly different than 90% at the…

A: Given, Sample size = 100 Sample proportion = 0.83   Under the claim, the null and alternative…

Q: Q12. Researchers establish the rate of false rejection of the null hypothesis prior to conducting…

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Q: A survey found that 70% of college students believe that their online education courses are as good…

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Q: For a two-tailed test with α = 0.05, the  value is what?

A: We have given that,  Significance level (α) = 0.05 Then,  We will find the critical value for…

Q: Test the claim that the proportion of men who own cats is smaller than 90% at the .025 significance…

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Q: The Mathematics Department in a certain university is cone graduates to find a job. A sample of 26…

A: Solution

Q: Due to grade deflation in which professor have been giving too many failing grades, the dean insists…

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Q: A researcher is conducting an experiment to evaluate the effectiveness of cognitive-behavioral…

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Q: Test the claim that the mean GPA of night students is larger than 2.4 at the 0.025 significance…

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

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

Q: The chi-square statistic for this table is 28.8. Can you reject the null hypothesis? Why or why not?

A: Given Chi-square test statistic is 28.8

Q: Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. At one school, the…

A: Form the given information we have, H0 : μ= 20.1  ( population mean is equal to 20.1) Ha : μ <…

Q: A 2011 survey, by the Bureau of Labor Statistics, reporte that 91% of Americans have paid leave. In…

A: Type I Error : Type I Error occurs if we reject true null hypothesis.   Type II Error : Type II…

Q: A one- sample t test is used with a sample of 60 scores. The degrees of freedom for this t score are…

A: According to the provided data, a one-sample t-test is used. The sample size, n is provided as 60.

Q: 8. A recent claim has been made that people who spend at least 30 minutes a day playing with their…

A: (8)Claim: People who spend at least 30 minutes a day playing with their dog are happier than people…

Q: Q13. The null Hypothesis is rejected, if the P-value is larger than significance level. a. True b.…

A: We have to find given statement is true or false..

Q: A survey found that 65% of college professors believe that their online education courses are as…

A: We have to find rejection region ...

Q: In testing hypotheses, which of the following provides strong evidence against the null hypothesis?…

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Q: Suppose that we have a problem for which the null and alternative hypothesis are given by: H0: μ =…

A: On observing the alternative hypothesis, it is clear that this is a two-tailed test.

Q: Upon enrolling in State University, freshmen are required to take an English placement exam. Over…

A: Null hypothesis  The statement which is under the test Here We are testing whether the percentage of…

Q: Perform a hypothesis test for a population mean and for a population proportion A group of…

A: The random variable is helping the children to enjoy reading to improve their intelligence. It…

Q: 3.03, find the p-value to 4 decimal You are performing a two-tailed test with test statistic z =…

A: solution two tail z= - 3.03 P(z < - 3.03 ) = 0.0012  ( using z table

Q: Test the daim that the proportion of men who own cats is significan tly different than the…

A: Given data: Significance level = 0.02

Q: The recent default rate on all student loans is 5.6 percent. In a recent random sample of 300 loans…

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Q: Sleeping on Flights. According to Expedia, 52% of Americans report that they generally can sleep…

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Q: Building codes in southern Florida require hurricane straps on single-family dwellings in order to…

A: Given, n=164 X = Number of straps failed at 200mph=48 P = Proportions of failure at 200mph=0.45 The…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.