A poll of 2,056 randomly selected adults showed that 90% of them own cell phones. The technology display below results from a test of the claim that 94% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.05 significance level to complete parts (a) through (e). Test of p = 0.94 vs p *0.94 Sample X N 1 1848 2,056 Sample p 0.898833 b. What is the test statistic? 95% CI a. Is the test two-tailed, left-tailed, or right-tailed? Right tailed test Left-tailed test Two-tailed test The test statistic is. (Round to two decimal places as needed.) (0.885798,0.911867) Z-Value - 7.86 P-Value 0.000

Q: The test statistic is enter your response here.

A:

Q: Please answer #13-17, Show all your work please thank you! In the first picture(first picture is…

A: Given Information: The graphical summary of the Age variable for the three treatment groups is…

Q: additionally how would you find the: test statistic & p-value

A: The claim is that mean lead concentration is less than 19 μg/g Null hypothesis: H0 : µ=9 μg/g…

Q: Explain about Scheffe’s test.

A:

Q: A clinical trial is run to investigate the effectiveness of an experimental drug in reducing preterm…

A: Therefore, the appropriate null and alternative hypotheses are stated below: H0: There is no…

Q: The sample mean of a dataset is 3.8 from 13 observations, calculate the sum of observations.

A: From the provided information, Mean of dataset (x̅) = 3.8 Number of observations (n) = 13

Q: 12. The news release referenced in the previous exercise also included data from independent samples…

A: The test hypotheses are: Null hypothesis: H0: p1 = p2 Alternative hypothesis: Ha: p1 < p2. Test…

Q: How statistical tests are used?

A:

Q: What is the main difference between z score and T score?

A: Z Score and T scores are both used in Hypothesis testing.  Z score is used while using z test and T…

Q: What is statistics and why do you need to use statistics in your research? How important are they?

A: Statistics: Statistics is the branch of mathematics that deals with the collection of data,…

Q: The data below represent the length (in miles) of a random sample of tornadoes in a specific area.…

A: Consider the given dataset: Tornado Length (In…

Q: could you please tell me why explain in simple terms why the power of a test matters to the users of…

A: Why power test is matters in statistics?  Having  enough statistical  power is necessary  to draw…

Q: Please explain how you got the 9.36 z-score test statistic?

A: Z for difference of proportion is given by,  Z= p1-p2/(S.E.)  SE is standard error which is…

Q: What is the value of the appropriate measure of center? What is the value of the appropriate…

A: Measure of central tendency determine the average of the data sets. It involves the measures such as…

Q: Explain the difference between “bias”, “error”, and “precision”. Be sure your definition explains…

A: Given information: Bias, error, and Precision

Q: Explain the sample mean of the difference scores varies.

A:

Q: How do i calculate finding the percentage between two z scores?

A: To find the probability between two z-scores: z-score represents the number of standard deviations…

Q: Describe about Which Level of Significance to choose.

A: The significance level should be selected with close consideration of key factors such as sample…

Q: The mean number of sick days an employee takes per year is believed to be about 10. Members of a…

A: Given:  Sample size = 8, sample mean = 10, level of significance = 0.05.

Q: Explain about the Two Independent Samples.

A: Two samples are said to be independent if the sample values selected from one population are not…

Q: Mean, median and mode are descriptive statistics that we often use when answering scientific…

A: Mean (Arithmetic) The mean (or average) is the most popular and well-known measure of central…

Q: What's the Z score and how is it calculated?

A: We know z-score is used in many fields. But we should know what is the meaning of z-score and how to…

Q: you want to know how how arizonia workers age 16 or older travel to work. To estimate the percentage…

A: Individual:Collected data which can be associated with a single element in a sample is called…

Q: explain what is measured by the sign of a z -score and what is measured by its numerical

A: here use basic of standard normal random variable z -score

Q: What is the mean of the given data set? 146, 152,168,174,180,178,179,180,178,178,168,165,152,144…

A:

Q: Explain about the Mean Difference Score.

A: