13) Find the p-value for a right tailed test with a z-score = 2.5. Use a .05 significance level to state the conclusion of the Null Hypothesis (this is a pleasant warm-up for problems going forward). 14) In a study of 420,095 Danish cell phone users, 135 subjects developed cancer of the brain. Test the claim that cell phone users develop cancer of the brain at a rate different from the rate of .0340% for people who do not use cell phones. Use a .005 signigicance level. Should cellphone users be concerned?

Q: Historically, the percentage of U.S. residents who support stricter gun control laws has been 55%. A…

A: It is given that the population proportion is 0.55  The favorable case x=1723 and the sample size…

Q: Has that rate of genetic testing changed in recent years in the U.S.? In a 2016 Harvard Poll of…

A: The claim is defined below as follows: From the given information, the claim is to test if the…

Q: An arrival reports that blue eyed people earn less than brown people, with these numbers: average…

A: Given data: The average salary of blue-eyed people is: A=$35,000. The average salary of brown-eyed…

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: A sample of n = 16 high school students took the SAT before and after a special training course. For…

A: Given information d¯=18n=16Sd=SSn-1=600016-1=20

Q: After learning about digit span tasks, the mean number of digits successfully recalled in the…

A: Standard deviation is the measure of dispersion of a set of data from its mean. It measures the…

Q: You are studying the difference in estrogen concentration between the left and right ovaries of 12…

A: H0: mean estrogen concentration in right ovary for these 12 mice = mean estrogen concentration in…

Q: A simple random sample of size n 200 drivers with a valid driver's license is asked if they drive an…

A: Solution: Given information:  n= 200 Sample size of drivers  x = 122 drivers drive an American made…

Q: are the null and altenative hypotheses? OB. Hg p0.26 H p0.26 Ho p026 H p-026 Hạ: p0 26 H p0.26 t is…

A: We want to find the Z test statistic

Q: Is This What P Means? A randomized comparative experiment examined the effect of the attractiveness…

A: From the given information we want to know about P.

Q: In a survey of 240 students in an elementary statistics class at the University of California-Davis…

A: Given that : n=240                      x=19 (Left handed) x=221 (Right handed) By using one sample…

Q: OxyContin The drug OxyContin (oxycodone) is used to treat pain, but it is dangerous because it is…

A: Solution:Given that,Level of significance = 0.05Sample size(x) = 52Total (n) =227

Q: Do sit down restaurant franchises and fast food franchises differ significantly in stock price?…

A: It is needed to check whether sit down restaurant franchises and fast food franchises differ…

Q: You are the head of an agency seeking funding for a program to reduce unemployment among teen-age…

A: Set up, Null Hyothesis (H0): P=p; there is no significant difference                  between the…

Q: If a hypothesis test in a CRD is performed at the 10% level, and the output from Excel shows a…

A: here given data is :level of significance =α=0.10p-value =0.000552we have to answer about the…

Q: 1. does the data satisfy the assumptions of ANOVA? 2. Write the null and alternative hypothesis of…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: A publishing company has developed a study guide (reference book) for GRE Math test. They want to…

A: When the value of sample size is less than 3, then we say that it is a small sample. In a small…

Q: It was claimed recently that more than  60%  of high school students in the United States use…

A: Given Data Hypothesized proportion p = 0.60 Formulation of Hypotheses: The null hypothesis is: H0­…

Q: Is there a difference between urban and rural jurisdictions in the hiring of female police officers?…

A: We have been given two samples:   One sample from Rural and One sample from Urban.

Q: You conduct a 1-way ANOVA with 7 groups and find a statistically significant result (using a =…

A: For k no. of given conditions, the possible no. of distinct pairwise contrasts is: kC2. It is given…

Q: Historically, the percentage of U.S. residents who support stricter gun control laws has been 55%. A…

A: Given,sample size(n)=2500no.of people favor of stricter gun control laws(x)=1723

Q: If a hypothesis test in a CRD is performed at the 1% level, and the output from Excel shows a…

A: Solution - Given that, Level of significance=1%=0.01 and P.value=0.0152 Since p.value…

Q: It was claimed recently that more than 55% of high school students in the United States use…

A:

Q: e amount time (in seconds) it takes to write a full na erence = writing hand – non-writing hand) for…

A: Paired test is used when the data follows : normality two sample sizes are same and tested the same…

Q: Researchers examined the relationship between social playtime and emotional intelligence in a sample…

A: From the provided information, The hypotheses can be constructed as: H0: ρ = 0 (There is no…

Q: A newspaper published an article about a study in which researchers subjected laboratory gloves to…

A: From the provided information,

Q: Coumadin is a drug used to thin the blood. In clinical trials, among 5799 patients treated with the…

A: Given that, x=149,n=5799 The sample proportion is, The type of test is two tailed test.

Q: The value for the test statistic for a left-tailed one mean z-test is z= -1.19. Determine the…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: 2. In a study of smokers who tried to quit smoking with nicotine patch therapy, 39 were smoking one…

A: We have given that  p0=39/(39+32)=0.5492

Q: A study was conducted simultaneously in two different communities in New York City to examine an…

A: p-value: A p-value is used to measure the probability to obtain the results and the assumption was…

Q: You would like determine if first year college women gain a significant amount of weight in their…

A: In this scenario, the aim is to obtain whether there is statistically evidence to suggest that the…

Q: You are a research assistant at a zoo.  The question of your study is "Has the proportion of baby…

A: From the provided information, The question of your study is "Has the proportion of baby zebras born…

Q: The leader of two postpartum women’s support groups is interested in the depression levels of the…

A: Provided information is, the leader of two postpartum women’s support groups is interested in the…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.