A recent study at a local college claimed that the proportion,  p , of students who commute more than fifteen miles to school is no more than  20% . If a random sample of  260  students at this college is selected, and it is found that  58  commute more than fifteen miles to school, can we reject the college's claim at the  0.1  level of significance? Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. The null hypothesis: H0:   The alternative hypothesis: H1:   The type of test statistic: (Choose one)ZtChi squareF             The value of the test statistic: (Round to at least three decimal places.)   The critical value at the  0.1  level of significance: (Round to at least three decimal places.)   Can we reject the claim that the proportion of students who commute more than fifteen miles to school is no more than  20% ?

Q: Range anxiety is one of the reasons consumers are reluctant to switch to an electric vehicle, and…

A: Given information: x 89 90 91.5 92 92.5 95 95.5 96 93 93.5 94 94 91…

Q: Students in a representative sample of 67 second-year students selected from a large university in…

A: The following solution is provided below

Q: One study claimed that 88% of college students identify themselves as procrastinators. A professor…

A: Given,n=282x=235Population proportion(P)=0.88sample proportion(p^)=xnsample…

Q: Students in a representative sample of 67 second-year students selected from a large university in…

A: Sample size (n) = 67 Mean x̅ = 41.00 Standard deviation (s) = 6.88 Significance level(α) = 1 - 0.95…

Q: A psychologist claims that students are more attentive in classes taught by instructors rated as…

A: Given that  Based on the data given it is related to two sample proportion for hypothesis test The…

Q: hts to determine whether the mean wasted tone during an 8-hour less than the mean of 120 minutes…

A:

Q: Students in a representative sample of 67 second-year students selected from a large university in…

A: Students in a representative sample of 67 second-year students selected from a large university in…

Q: A study was conducted to determine whether automobile repair charges are higher for female customers…

A: In the given situation, the two samples are randomly selected at 20 repair shops. Here, the repair…

Q: One study claimed that 91% of college students identify themselves as procrastinators. A professor…

A:

Q: Frito-Lay produces a 10 ounce family size bag of the regular potato chips and a 9.5 ounce family…

A: The parameter of interest is the mean weight difference between regular and wavy chips.

Q: Imagine an experiment with a factor that has 9 levels (e.g., coffee made with coffee beans from 9…

A: We have given that  MS(factor) = 40.0 MS(residual) = 10.0.

Q: A study examined the link between sodium intake and blood pressure in children and adolescents…

A: Given information, H0:μ>112.8 The null hypothesis can be defined in words in the following way:…

Q: Suppose Marcella wants to compare music listening time among college students on weekdays versus…

A: The t-test is one of the most use full statistical tests in statistical inference. Most of the small…

Q: dence that a d ical evidence t istical evidenc

A: Let X1 be the random variable such that minutes late for delayed flights by company A x̅1: Sample…

Q: The Coca-Cola Company reported that the mean per capita annual sales of its beverages in the United…

A: Mean(x)=460.4 standard deviation(s)=101.9 sample size(n)=36

Q: Medical research has shown that repeated wrist extension beyond 20 degrees increases the risk of…

A: One sample T- test is applicable ___________________________________

Q: at type of variable is "engaged"? ariable is wat is the sample proportion of students in this high…

A: Given information:Population proportion: Total population size: Sample size: The number of students…

Q: The owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the…

A: From the provided information, Sample size (n) = 250 She would now like to determine whether or not…

Q: In the most recent Rasmussen Report on congressional performance, a random sample of registered…

A:

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: The University of Colorado conducted a Halloween candy consumption study. The researchers measured…

A: The descriptive statistics is conducted using EXCEL. The software procedure is given below: Enter…

Q: Using a significance level of 0.05, the critical value of the appropriate test statistic to conduct…

A: The sample size for first group is 13 and second group is 13.

Q: a. State the null and alternative hypotheses. Ho: H1 - 42 Select Hạ: 41 - 42 Select b. Compute the…

A: The provided sample means are shown below: Xˉ1=6.82\bar X_1 = 6.82  Xˉ2=6.25\bar X_2 = 6.25   Also,…

Q: In 2009, it was estimated that 63% of Americans supported the death penalty. In 2014, a Rasmussen…

A: sample size(n)=943 No. of Americans supported the death penalty(x)=536 population proportion=0.63

Q: It has been claimed that at UCLA 43% of all students live on campus. Researcher Ebony Robinson…

A: Given X=112 n=250

Q: (a) Construct a 95% confidence interval estimate of , the population mean procrastination scale for…

A: Confidence interval: Since the population standard deviation is unknown, t distribution can be…

Q: In 2007, the CDC reported that approximately 6.6 per 1000 (0.66%) children were affected with autism…

A:

Q: n a study, a CSULB professor wants to estimate the average grade point averages (GPA) of all…

A: It is given that sample mean is 2.35 and the standard deviation is 1.03.

Q: According to eMarketer, the average time spent per day with digital media in 2010 was 3 hours and 14…

A: Given :  x¯ = 5.16 s = 2.3 n = 20 degrees of freedom = n-1 = 19 α = 0.1 tα2, n-1 = t0.12, 20-1 tα2,…

Q: In 2016, the Honors College at a large state university claimed that the average GPA of its…

A: The hypotheses are; H0: M ≥ 3.80 Ha: M < 3.80 This is a lower-tailed test.

Q: A fitness course claims that it can improve an individual's physical ability. To test the effect of…

A: Using the given relation for the difference "d" calculating the values: Sit-ups before Sit-ups…

Q: 42 42 23 32 30 42 25 47 35 38 Sit-ups after 57 48 29 41 36 57 40 51 41 40   Step 2 of 5 : Find the…

A: We have given that the paired data of teo sample sit-ups before and sit-ups after. Sample size n is…

Q: Suppose a recent report indicates that the mean height of girls between the ages of seven and nine…

A: Given: Population meanμ=131Sample size(n)=49 The claim is that the height is higher than 131 cm.

Q: A real estate agent compares the selling prices of randomly selected homes in two municipalities in…

A: The objective of this question is to determine if there is a significant difference in the average…

Q: Dr. Guidry conducts a study examining the relationship between the number of friends one has and the…

A: A study reported in the Journal of Small Business Management concluded that self- employed…

Q: Professors collected data consisting of eye color and gender of statistics students. Among 912 male…

A:

Q: Can you conclude that the proportion of boys who are overweight differs from the proportion of girls…

A: Here use  proportion test for 2 sample

Q: How often do you go out dancing? This question was asked by a professional survey group on behalf of…

A: Let p1: proportion of single men who go out dancing occasionally p2:proportion of single women who…

Q: A fitness course claims that it can improve an individual's physical ability. To test the effect of…

A: State the hypotheses. That is, there is no evidence that participation in the physical fitness…

Q: The accompanying table gives amounts of arsenic in samples of brown rice from three different…

A: The question is about ANOVA.Given :

Q: believes that th 272 college student- of One study claimed that 88 % of college students identify…

A: The question is about hypo. testing Given : Popl. prop. of students who identify themselves as…

Q: One study claimed that 86% of college students identify themselves as procrastinators. A professor…

A: Given: Sample Size,n= 238 Number of successes,x= 193

Q: 1. A researcher predicted that students will learn better if they attribute their performance to…

A: For the given data perform t test for independent sample test

Q: Is there convincing evidence that the proportions of those who would fall into each of the hormone…

A: The expected values are,   None Esterified Estrogen Conjugated Equine Estrogen Total Venous…

Q: question in a poll taken in 2007 asked, "Do you think the penalties for underage drinking should be…

A: Given data, n=500 p=61% =0.61 Construct a 95% confidence interval?

Q: A sample survey by Comcast asked a random sample of customers about use of the Internet and about…

A: The test is to check whether there is a relationship between Internet use and community type or not.…

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.