Claim: Fewer than 9292​% of adults have a cell phone. In a reputable poll of 10151015 ​adults, 8282​% said that they have a cell phone. Find the value of the test statistic. The value of the test statistic is nothing. ​(Round to two decimal places as​ needed.)

Q: udy by estigate whether this result applies to its own product, the manufacturer of a national…

A: We have given that  Population proportion p=64%=0.64 Sample size n =100 Favorable cases x =52 Sample…

Q: ntering freshmen in 2016 who graduated in the botom third f their high school class. Is there…

A: For z = 1.980 and for one tailed test,  the corresponding p value is 0.024 which can be obtained by…

Q: Q1:Let p equal the proportion of drivers who use a seat belt in a country that does not have a…

A:

Q: The Energy Information Administration reported that 51.7% of homes in the United States were heated…

A: STAT --> TESTS ---> 1-propZtest

Q: Salaries of Government Employees The mean salary of federal government employees on the General…

A: We have given that  Sample size n=30 , mu= 58800 Xbar=59593 ,s=1500 level of significance =alpha…

Q: n automobile owner found that 20 years ago, 74% of Americans said that they would prefer to purchase…

A:

Q: The mayor of a town has proposed a plan for the construction of a new community. A political study…

A:

Q: 2. A recent report on elementary schools in Kent county claimed that 13% of elementary students…

A: Let p be the population proportion  X=number of people typically walk to a school  n=random sample…

Q: A researcher is investigating the effect of acupuncture treatment for chronic back pain. A sample of…

A: State the hypotheses. That is, there is no evidence that acupuncture treatment significantly…

Q: laim: Most adults would erase all of their personal information online if they could. A software…

A: Given , n = 500 , p^= 0.56

Q: In a recent year, a poll asked 2354 random adult citizens of a large country how they rated economic…

A:

Q: A researcher wants to determine the sensitivity of mammograms to determine how effective they are at…

A: Solution: The below tabular information given is:   Frequency of Breast Cancer Cases Frequency of…

Q: A study is conducted involving 12 infants to investigate the association between gestational age at…

A: Given that:  A study is conducted involving 12 infants to investigate the association between…

Q: 4. Travel to Outer Space A CBS News/New York Times poll found that 329 out of 763 randomly selected…

A: Given: x=329n=763

Q: A survey of 120 men found that 72 gamble. Another survey of 100 women found that 52 gamble. (a) Test…

A: a)   Denote p1, p2 as the true population proportions of men and women, who gamble, respectively.

Q: Proctor & Gamble claims that at least half the bars of Ivory soap they produce are 99.44% pure (or…

A: x = 46 n = 101

Q: Before a congressional election, a poll is taken of registered voters to estimate the proportion…

A: To test whether the proportion of registered voters who intend to vote Republican is significantly…

Q: Expedia would like to test the hypothesis that the proportion of United Airline flights that arrive…

A: It is given that Sample size n = 110 Number of flights arrived at time, X = 82 Level of significance…

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A:

Q: Suppose John has a torn tendon and is facing surgery to repair it. The surgeon explains the risks to…

A:

Q: You are thinking of moving to either Des Moines, Iowa or San Francisco, California. A friend claims…

A: 1) From the given output, the test statistic is 0.162 and the p-value is 0.873.

Q: Proctor & Gamble claims that at least half the bars of Ivory soap they produce are 99.44% pure (or…

A: Here we use z-test of a proportion. Proctor & Gamble claims that at least half the bars of Ivory…

Q: The recidivism rate for convicted sex offenders is 14%. A warden suspects that this percent is…

A: Given,n=359x=65P^=Xn=65359=0.181α=0.05H0: P =0.14H1: P>0.14

Q: You are conducting a study to see if the proportion of men over 50 who regularly have their prostate…

A: Given,  Z=2.968 And Test is two tailed test.

Q: 18% of all college students volunteer their time. Is the percentage of college students who are…

A: From the provided information, Population proportion (p) = 0.18 Sample size (n) = 341 Out of which…

Q: Claim: More than 53% adults would erase all of their personal information online if they could. A…

A:

Q: Claim: most adults would erase all of their personal information online if they could. A software…

A: H0 : p =0.5 H1 : p >0.5 Population proportion = p₀ = 0.5 Sample proportion = p̂  = 0.56…

Q: A medical researcher wishes to try three different techniques to lower cholesterol levels of…

A: Null and Alternative Hypotheses The following null and alternative hypotheses need to be tested:…

Q: This my third time posting the same question. Because no one answer it straight to me. I already…

A: 1)From the provided information, The sample number of students watching video (n) = 19 The number of…

Q: A researcher daims that a post-lunch nap decreases the amount of time it takes males to sprint 20…

A: Given The data is as follows: Male Sprint time (without nap) Sprint time (with nap) 1 4.01 3.89…

Q: ​Claim: Most adults would erase all of their personal information online if they could. A software…

A:

Q: Q1:Let p equal the proportion of drivers who use a seat belt in a country that does not have a…

A: Given, p = proportion of drivers who use a seat belt in a country that does not have a mandatory…

Q: e) Before looking at the data your Grandpa, a life-long baseball fan, starts ranting about how the…

A: Thank you for posting your question. Hope you're doing well.

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

A: The hypotheses for the test are given below. Null hypothesis: H0: p = 0.11 Alternative hypothesis:…

Q: A sample of non-English majors at a selected college was used in a study to see if the student…

A:

Q: For a hypothesis test of the claim that the mean amount of sleep for adults is less than 6 ​hours,…

A: Given : power = 0.4733 supporting the claim that μ<6 hours of sleep when the actual population…

Q: A local county has an unemployment rate of 4.2%. A random sample of 17 employable people are picked…

A:

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

A: Introduction:The test hypotheses are:Null hypothesis:H0: p = 0.30, that is, 30% in the sample of…

Q: The Invisible Gorilla experiment was repeated numerous times. In one experiment, 21 students…

A: (1). It is given that for the invisible gorilla experiment, there are 21 students who are watching…

Q: ​Claim: Most adults would erase all of their personal information online if they could. A software…

A: State the hypotheses. That is, there is no evidence that the most of the adults would erase all of…

Q: Thirteen different video games showing drug use were observed. The duration times of drug use ​(in…

A: Given n=13

Q: A sample of non-English majors at a selected college was used in a study to see if the student…

A: The random variable score follows normal distribution. There are two independent samples which are…

Q: A manager states that in his factory, the average number of days per year missed by the employees…

A: Given that the a manager states that in his factory, the average number of days per year missed by…

Q: (a) What proportion of college graduates answered yes when asked if they had ever used online…

A: The assumed CI for the difference in proportions is,     (p^1-p^2)±(Z * SE)where Standard Error…

Q: A video game claims that the drop rate for a certain item is 5% according to a game publisher. In…

A: The hypotheses are given below: Null hypothesis: H0:p=0.05 Alternative hypothesis: H1:p≠0.05 The…

Q: = (Enter 3 decimal places) z = (Round to 2 decimal places) P-value = (Enter at least 4 decimal…

A: We have given that  Population proportion p = 0.55 Favourable cases, X = 128 Sample size n = 200…

Q: A survey of 2314 adults in a certain large country aged 18 and older conducted by a reputable…

A:

Q: laim: Fewer than 95​% of adults have a cell phone. In a reputable poll of 1152 ​adults, 85​% said…

A:

Q: Victims of Violence A random survey of 86 women who were victims of violence found that 20 were…

A: Given information: First sample size is, n1 = 86 women who were victims of violence Out of 86 women,…

Q: of all college students volunteer their time. Is the percentage of college students who are…

A: The null and alternative hypotheses are: Ho: p = 0.18Ho:p=0.18 Ha: p =\not 0.18H1:p≠​0.18 This…

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.