Assume a significance level of o=0.01 and use the given information to complete parts (a) and (b) below. Original claim: The standard deviation of pulse rates of a certain group of adult males is more than 13 bpm. The hypothesis test results in a p-value of 0.3588. A.state a conclusion about the null hypothesis. ( Reject H0 or fail to reject H0.) B.without using technical terms, state aa final conclusion that addresses the original claim.

Many people believe that the average number of Facebook friends is 150. The population standard deviation is 37.6. A random sample of 46 high school students in a particular county revealed that the average number of Facebook friends was 159. At =α0.01, is there sufficient evidence to conclude that the mean number of friends is greater than 150? A. State the hypotheses and identify the claim with the correct hypothesis. :H0 ▼claim or not claim :H1 ▼claim or not claimThis hypotheses test is a ▼one-tailed or two-tailed test B. Find the critical value(s) (c)Compute the test value. z= (d)Make the decision. reject or accept (e)Summarize the results. is there enough evidence to support the claim

Find test value and p-score.

A company claims that the mean monthly residential electricity consumption in a certain region is more than 860 kiloWatt-hours (kWh). You want to test this claim. You find that a random sample of 66 residential customers has a mean monthly consumption of 900 kWh. Assume the population standard deviation is 123 kWh. At a = 0.10, can you support the claim? Complete parts (a) through (e). C) Find the standardized test statistic. Use technology. The standardized test statistic is z = 2.64 (Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. O A. Reject H, because the standardized test statistic is not in the rejection region. B. Fail to reject Ho because the standardized test statistic is in the rejection region. O C. Fail to reject Ho because the standardized test statistic is not in the rejection region. D. Reject H, because the standardized test statistic is in the rejection region. (e) Interpret the decision in the context of the…

Identity  the null and alternative hypotheses, test statistic,  p value, state final conclusion

The average American consumes 86 liters of alcohol per year. Does the average college student consume more alcohol per year? A researcher surveyed 10 randomly selected college students and found that they averaged 92 liters of alcohol consumed per year with a standard deviation of 16 liters. What can be concluded at the the αα = 0.05 level of significance? The null and alternative hypotheses would be: Ho=?H1=? The test statistic  t=?  (please show your answer to 4 decimal places.)

You have a really annoying stapler that seems to randomly jam. On any given attempt to staple, it seems to independently jam 18.1% of the time. 360 attempts were made use the stapler. a) Find the mean and standard deviation for the number of jammed staples out of 360 attempts. Mean: Standard Deviation (rounded to 2 decimals): b) Does the normal approximation apply? Is the success / failure condition met (using a cutoff of 5)? No Yes c) Use the normal distribution (with continuity correction) to find the probability that your stapler will jam more than 79 times out of 360 attempts. Use the rounded standard deviation in your calculation. z-score (to 2 decimals) = probability (to 4 decimals, using the rounded z-score)

The accompanying data are​ drive-through service times​ (seconds) recorded at a fast food restaurant during dinner times. Assuming that dinner service times at the​ restaurant's competitor have standard deviation σ = 58.1 ​sec, use a 0.025 significance level to test the claim that service times at the restaurant have the same variation as service times at its​ competitor's restaurant. Use the accompanying data to identify the test​ statistic and​ P-value. Then state a conclusion about the null hypothesis. H0: σ = 58.1H1: σ ≠ 58.1   Service Times21215218316510918416218011516831413832019311318318611113430822317618679156165333195131144148153149921832911663452111201199817196183180150288114154114

Research suggests a link between mothers alcohol consumption with the birth weight of newborns. Random sampke of 100 mothers who drank during pregnancy, average birth weight od their babies is 7.2 lbs. Average birth weight nationwide is 7.8 lbs. And standard deviation is 1.56. Do mothers who drink have babiea that are significantly smaller compared to nationwide? Use alpha =  01.  A. State the null abd the research hypothesisB. Identify the critical values of z or t used to define the decision ruleC. Calculate the test statisticD. Report the p-valueE. Report your findings

A factory that manufactures bolts is performing a quality control experiment. Each object should have a length of no more than 19 centimeters. The factory believes that the length of the bolts exceeds this value and measures the length of 94 bolts. The sample mean bolt length was 19.06 centimeters. The population standard deviation is known to be o = 0.26 centimeters. What is the test statistic z? Ex: 1.23 What is the p-value? Ex. 0.123 Does sufficient evidence exist that the length of boltş is actually greater than the mean value at a significance level of a = 0.01?[ Select v