A researcher conducted a hypothesis test to see if students on average spend more than 1 hour per homework assignment. The level of significance, α,α, selected was 0.05. This means that if on average they do spend exactly 1 hour per assignment, then there is a 5% chance that the erroneous conclusion will be made that students spend on average more than 1 hour per assignment. True or False

Q: (a)State the hypotheses that can be used to test for a significant difference between the population…

A: Given: p1^=4101000p2^=4201200

Q: In a previous year, 61% of females aged 15 and older lived alone. A sociologist tests whether this…

A: We have to find test statistics and p value...

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

A: Given :  a treatment is expected to increase scores among a population with µ= 20

Q: A survey of states found that the proportions of achults who are smokers in Alabama was 24.8% and in…

A:

Q: In a survey of 1000 adult Americans, 45.4% indicated that they were somewhat interested or very…

A:

Q: A well-known brokerage firm executive claimed that 20% of investors are currently confident of…

A: Solution Here we are interested to test the proportion of people who are confident is smaller than…

Q: A researcher conducts a hypothesis test to evaluate the effect of a treatment that is expected to…

A: From the given information, A researcher conducts a hypothesis test to evaluate the effect of a…

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

A: Given : p= 0.1 n = 800 p^ = 0.18

Q: in preparation for a simulation model, a KS test has been used to check the goodness-of-fit of a…

A: Kolmogorov-Smirnov test is used for determining the sample for checking the normality.  F(x) =…

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

A:

Q: The local swim team is considering offering a new semi-private class aimed at entry-level swimmers,…

A: Solution: From the given information, the claim is that the population mean is less than 15.

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: Given Mean=1.9 Variance=0.0036

Q: A well-known brokerage firm executive claimed that 60% of investors are currently confident of…

A:

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A:

Q: In the recent Census, three percent of the U.S. population reported being of two or more races.…

A:

Q: In a previous year, 57% of females aged 15 and older lived alone. A sociologist tests whether this…

A: Given data is appropriate for z-test for single proportion because the sample size is large…

Q: Ho: 0 H;: []

A: Explanation :There are two hypotheses that are made: the null hypothesis, denoted Ho, and the…

Q: The records of a casualty Insurance company show that, in the past, its clients have had a mean of…

A:

Q: A researcher wants to determine if a new advertising campaign improves the amount of time kids spend…

A: From the above data  We are given that A researcher wants to determine if a new advertising campaign…

Q: ds of a casualty insurance company show that, in the past, its clients have had a mean of 1.7 auto…

A: Here it is given that- Mean (μ) = 1.7 Variance (δ2) = 0.0036

Q: In the past, the mean running time for a certain type of radio battery has been 9.6 hours. The…

A: Hypothesis testing plays a major role in research and development. To diagnose the underlying cause…

Q: A well-known brokerage firm executive claimed that 80% of investors are currently confident of…

A: given that, p=0.8 n= 200 p^= 0.83 α=0.01

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: Solution-: x¯=1.7,σ2=0.0036 We state the null and alternative hypothesis

Q: A researcher is using a one-tailed hypothesis test with α = .01 to evaluate the effect of a…

A:

Q: In the last mayoral election in a large city, 53% of the adults over the age of 65 voted Republican.…

A: In the last mayoral election in a large city, 53% of the adults over the age of 65 voted Republican.…

Q: The National Institute of Mental Health published an article stating that in any one-year period,…

A: The hypotheses can be constructed as: Null hypothesis: H0: p = 0.095 Alternative hypothesis: H1: p…

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: Given, The records of a casualty insurance company show that, in the past, its clients have had a…

Q: A certain financial services company uses surveys of adults age 18 and older to determine if…

A: a. Null Hypothesis: H0:p1=p2 Alternative Hypothesis: Ha:p1-p2≠0 Test Statistic: From the given…

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: According to the given information, we have Mean = 1.7Variance = 0.0036

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: Here, if we assume the variance of the number of accidents as σ2, then we need to check if the…

Q: When having a baby, assume that the probability of having a boy is 50% and the probability of having…

A: Amswer: See the answer below:

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A:

Q: An independent consumer group published its finding that the lifetimes of electric bulbs…

A:

Q: You complete a hypothesis test using alpha = .05 and based on the evidence from the sample, your…

A: Researchers do a Hypothesis test to decide what is really happening withe the given data, there are…

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: 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…

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: It is been asked to find the hypotheses to test whether the variance of number of accidents per day…

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A:

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A:

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: claim for the test is the actuaries of the company claim that the variance of the number of…

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: Solution. Given claim is variance of the number of accidents per day is no longer equal to 0.0025.

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: From the provided information, Mean (µ) = 1.7 Variance (σ2) = 0.0025

Q: The study shows that for lung cancer, less than 5% of patients were cured in Denmark and Poland,…

A: Let p be the population proportion of patients were cured in Spain  Given p=10%=0.10

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: The test Statistic is           (round to 3 decimal places) The P value is

A: Given that sample size n = 200 And the sample proportion of people said they are confident of…

Q: he records of a casualty insurance company show that, in the past, its clients have had a mean of…

A:

Q: A major credit card company is interested in the proportion of individuals who use a competitor’s…

A: The test hypotheses are:  H0: p=0.65 vs Ha: p>0.65. It is given that the p0=0.70, the p-value is…

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

A:

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.