Suppose for a sign test, there are 8 plus signs, 3 negative signs and 1 zero. A. What would be the test statistic? B. What would be the critical value for a one tailed test at a =0.05?

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

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Q: Find the critical values for (a) A left-tailed test with a=0.15 (b) A two-tailed test with a= 0.03

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Q: A random sample of 10 independent healthy people showed the body temperatures given below (in…

A: here mean = ∑xn=983.310 = 98.3 sample standard deviation = ∑(xi-x)2n-1 = 0.8486 since we donot know…

Q: 3. Given the null hypothesis, "The mean age of the patients in a hospital is equal to 26", state the…

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Q: 5) The managers for a fruit juice facility claim that the standard deviation for the ounces per…

A: We have to find correct hypothesis.

Q: A study20 conducted in June 2015 examines ownership of tablet computers by US adults. A random…

A: It is asked yo test whether the proportions are different or not. So the null hypothesis will claim…

Q: A random sample of n=4 individuals is selected from population with µ = 35, and a treatment is…

A: a. The difference between the mean for the treated sample and the mean for the original population…

Q: Referring to Table 12-4, the critical value of the test statistic at 1% level of significance is…

A: The degrees of freedom is, df=k-1=5-1=4 The degrees of freedom is 4. The level of significance is…

Q: Suppose a research study uses two independent groups with 21 individuals in each group. If a t-test…

A: The degrees of freedom is, df=n1+n2-2=21+21-2=40 The degrees of freedom is 40. Consider the test is…

Q: Which table is used to find the critical value in the Cochran Q test?

A: In Cochran Q test, we use asymptotai critical value.

Q: consider testing the population mean to be greater than 0.05. at a significance level 0.01, the…

A: Given information: The population mean is greater than 0.05. The significance level is 0.01. That…

Q: A survey of 80 r/s SCC students shows that 54 of them have a C-average or better. Perform a…

A: Given that  Sample size n =80 Favorable cases x =54 Sample proportion p^=x/n  =54/80 =0.675 NOTE:-…

Q: Whenever hypotheses are established such that the alternative hypothesis is "µ > 8", where u is the…

A: Given alternative hypothesis is,μ>8. That is, the alternative hypothesis is greater than case.…

Q: A recommendation for the amount of vitamin C that a person should have per day is 75 mg. A…

A: Given that:  μ = 75

Q: What is the critical value of a two-sided paired t test with ? = 0.05 and ? = 25?

A: Given that, Sample size n=25 Level of significance α=0.05

Q: In 1995, it was determined that 78% of US citizens supported a ban on household aerosols.  Thinking…

A: Null and alternative hypotheses: The hypothesis which is tentatively fixed up under and tested for…

Q: A researcher wants to test the claim that convicted burglars spend an average of 18.7 months in…

A: Here, population standard deviation is not known. Hence, it is appropriate to use one sample t-test.…

Q: From a sample of 14 observations, an analyst calculates a t-statistic to test a hypothesis that the…

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Q: 2. Given the null hypothesis "There is no significant relationship between Emotional Intelligence…

A: The null hypothesis is given as: H0:There is no significant relationship between Emotional…

Q: 4) Suppose a test statistic is calculated as Z= 2.40. Given a right tailed test, what is its…

A: It is given that the the calculated value of the test statistic is obtained as Z = 2.40 and the test…

Q: A coin-operated drink machine was designed to discharge a mean of 7 ounces of coffee per cup.…

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Q: 13. What is the correct decision in a hypothesis if the data produce a t-statistic that is in the…

A: 13. Identify the correct option for if the value of the observed test statistic falls in the…

Q: Suppose we wanted to test the hypothesis that a control group of cancer patients (Group 1) would…

A: Solution: Given information: n1= 25 Sample size of group 1n2= 25 Sample size of group 2x1= 78.5…

Q: With a = .05, what is the critical t value for a one-tailed test with n = 15?

A: Solution: We are given:Level of significance = 0.05Sample size = 15The test is one-tailed.We have to…

Q: When consumers apply from credit cards, their credit is rated using FICO scores.  A random sample of…

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Q: Q.5.1 A national publishing house claims that 45% of all weekly magazine readers in South Africa…

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Q: Suppose for a sign test, there are 8 plus signs, 3 negative signs and 1 zero. A. What would be the…

A: The following information has been given: The number of positive sign X+=8. The number of negative…

Q: From previous studies, it is concluded that 90% of phone numbers in a certain city are unlisted. A…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: It is claimed that only 20% of Thunder Bay residents would be willing to purchase a home in a…

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Q: A fast food outlet claims that the mean waiting time in line is less than 4.9 minutes. A random…

A: We have to find out hypothesis for given data .....

Q: I am doing a two tailed z test with a z statistic of 1.72, what is my p value?

A: It is given that there is a z-test for two-tailed and the test statistics value is 1.72.

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: An engineer is comparing voltages for two types of batteries (K and Q) using a sample of 35 type K…

A: There are two independent samples which are type K batteries and type Q batteries. We have to test…

Q: Suppose the P-value in a two-tailed test is 0.0134. Based on the same population, sample and null…

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

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Q: If there are 4 scores per group and the t value is 2.34, what is the p value for a two-tailed test…

A: Note: Thank you for the question. Since it is given that, there are 4 scores per group we are…

Q: Find the P-value for a right tailed test that produces a test statistic of z = 1.945.

A: We have given that,  Z= 1.945 Right-tailed test Then,  We will find the P-value = ?

Q: A random sample of n = 25 individuals is selected from a population with µ = 20, and a treatment is…

A: Consider that μ defines the population mean score.

Q: Suppose a study reported that the average persin watched 3.37 hours of television per day. a random…

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Q: With α = .05, what is the critical t value for a one-tailed test with n = 15?​

A: Given level of significance = 0.05 and one tail test.we need critical value for t distribution with…

Q: In each part, we have given the value obtained for the test statistic, z, in a one-mean z-test.We…

A: (a)P-value:

Q: AFind the critical z value using a significance level of a 0.07 if the alternative hypothesis Ho is…

A: Answer - Find the critical z value using a significance level of α = 0.07       The alternative…

Q: The owner of a fitness watch would like to determine if the mean number of steps he takes per day…

A: Statistical hypothesis testing is a method in inferential statistics which is a branch of…

Q: the p-value for this hypothesis test would be ________.

A: Given : n1=35 , n2=39 , X1-bar=64.5 , X2-bar=63.6 ,  σ1=3.0 , σ2=3.5 Our aim is to find the p-value.…

Q: Is there an association between daily screen time and exercise habits in high school students? Mia…

A: Null Hypothesis : It is always setup to nullify the consider relationship Alternative Hypothesis: it…

Q: What else can be calculated by the TI-83 besides the normal probabili

A: answer of given question is in step 2

Q: If a treatment is expected to increase scores among a population with u= 20, then the alternative…

A: HERE CLAIM IS MEAN WILL BE INCREASED TO IT IS GREATER THAN 20  CLAIM IS REPRESNTED IN ALTERNATIVE…

Q: This is a two-tailed test, so we are concerned about the critical values that give a total area of…

A: The level of significance is α = 0.05.