The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.250.25​, and the sample statistics include nequals=11501150 subjects with 265265 saying that they smoked a cigarette in the past week. Find the value of the test statistic.

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: n₁= 317 x₁= 69 n₂= 296 x₂= 15 α = 0.05

Q: Which of these best describes the conclusion we could make using a 5% level of significance? Select…

A: The decision in the hypothesis testing can be made using two important methods. They are the p-value…

Q: Let µi =the true mean score for all students like these receiving the intervention and u2 = the true…

A: Box plot also known as box and whisker diagram is a standardized way of representing the data…

Q: The P-value for a one-sided test for a mean is 0.06. The P-value for the corresponding two-sided…

A:

Q: What statistical test should he use to analyze the data? a. Independent Samples t-test b. Chi…

A: From the given data, we have to test whether female employees are more likely or less likely to be…

Q: A researcher made a survey regarding the proportion of male and female college students who dropped…

A:

Q: n 1971, there was a shift in attitudes, as Americans’ “ideal” family switched from four kids to two…

A: The median would stay the same as it is not affected by outliers   The mean would increase as it is…

Q: Suppose that 75% of college students prefer pepperoni on their pizzas. You took a sample of ?=150 at…

A:

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: Suppose the null hypothesis is not rejected. State the conclusion based on the results of the test.…

A: Test is that whether the mean proce has increased.

Q: The table below summarizes the  results of a survey in which randomly selected people were asked how…

A: It is needed to test, whether the feelings on medical marijuana and gender are independent or not.

Q: 11% of all Americans suffer from sleep apnea. A researcher suspects that a lower percentage of those…

A: We have given that the hypothetical proportion p0=0.11, sample size n=317 and favourable number of…

Q: State the null and alternative hypothesis as an expression

A: Given that x1=12.5 x2=13.9 s1=3.9 s2=5.2 n1=14 n2=17

Q: sed on data from the U.S. Bureau of Economic Analysis). Tom ns to open a Cadillac car dealership and…

A: The claim is that the sample was drawn from a population with mean 13901. The null hypothesis is,…

Q: You would like to determine if there is a statistically significant difference between the bagel…

A: In this scenario, the aim is to obtain whether there is statistically significant difference between…

Q: tor for a medical assistance program wishes to test the hypothesis that her students score higher…

A: As the population standard deviation is not known, we will use a t-test. The null and alternative…

Q: For the test described in Scenario A, 32 apartments were measured and the sample mean found to be…

A: Given that  Sample size n =32 Sample mean =1237 Standard deviation =45

Q: ell as on the frequency participatión in risk behaviors. The mean scores for the risk behaviors are…

A: Given: The data is provided for the perceived level of riskiness of thrill behavior in males and in…

Q: Three years​ ago, the mean price of a​ single-family home was ​$243,741. A real estate broker…

A: We want to tell you, which one is the correct choice.

Q: The Congressional Budget Office reports that 36% of federal civilian employees have a bachelor's…

A: Given : Mean = μ = 0.36  Level of significance = 0.05 p^ = xn    = 31118    = 0.2627

Q: You want to compare the performance on a learning task of a group of 20 subjects who have been given…

A: Introduction: Denote μ as the true average number of correct responses by those who under Drug P.…

Q: Which of the following is the appropriate null and alternative hypotheses for the test described in…

A:

Q: Which one of the following is the correct way to report the results of a t test? The mean math-test…

A: Given Information:  The mean math-test score for the 12th grade students (M = 82.7, SD = 4.9)   The…

Q: An analysis was conducted to determine whether the average height of the 25 girls in the same class…

A: Here Avg height of 25 girls in the Same class is difference from population mean is checked Here…

Q: a claim is made that the height of a police officer is 5 feet 11 inches. to test whether this claim…

A: Let us take the null hypothesis that the height of a police officer is 5 feet 11 inches H0:μ = 5'11…

Q: on an intelligence quotient test with a mean score of 100 and a standard variation of 15, patrick…

A: Given: The value of mean is, μ=100. The value of standard deviation is, σ=15. The value of score…

Q: A marketing manager for a cell phone company claims that more than 35% of children aged 10-11 have…

A: Assume that p is the true proportion of all children aged 10-11 that have cell phones.

Q: A research article stated that there was a mean difference in depressive symptoms between male and…

A: From the provided information, The claim is that there was a mean difference in depressive symptoms…

Q: IOF 20 Fandomly selected sets of siblings. The 20 pairs of measurements yield x = 98.55, y= 96.1,…

A: Given y = 1.09 +0.96x, where x represents the IQ score of the younger child. x= 102 Use a…

Q: in october 1947 the gallup organization surveyed 1000 adult americans and asked are you a total…

A: We have given thatn1 = 1000 , x1 = 378n2 = 1000 , x2 = 333Significance level (α) = 0.05Now,p̂1 =…

Q: The recidivism rate for convicted sex offenders is 8%. A warden suspects that this percent is…

A: Given,n=321x=22p^=xnp^=22321=0.0685α=0.01

Q: 879, P-vaIue Suppose IQ scores were obtained for 20 randomly selected sets of couples. The 20 pairs…

A: For the best predicted value, first we will see whether the two variables (x and y) are…

Q: The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.25…

A: Given,n=1908x=439p^=xnp^=4391908=0.2301

Q: Suppose IQ scores were obtained for 20 randomly selected sets of couples. The 20 pairs of…

A:

Q: In a city with three high schools, all the ninth graders took a Standardized Test, with these…

A: Given:  The number of students and mean scores for the three schools are:                  School 1…

Q: In a One-way Between Subject ANOVA, the number of levels the IV had was 3, and the within/error…

A: Given thatin a One-way Between Subject ANOVA, the number of levels the IV had was 3, and the…

Q: Suppose we measure GPA for people in our class, we find the mean is 2.8 and the median is 3.2. What…

A: Given: Mean = 2.8 Median = 3.2

Q: Two samples are randomly selected from a population. One sample has n = 5 and the second has n = 30.…

A: In this case, there are two samples. One sample has size of n = 5 and another has size of n = 30.

Q: The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.25…

A: The provided information are:

Q: What is the value of the sample test statistic? (Round your answer to two decimal places.)=__…

A: Given data number of success , x= 35 sample size, n =52 population proportion,p=…

Q: In order to measure the liking of a developed application, tasters were asked to give a score…

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.