The number of hits to a website follows a Polsson process. Hits occur at the rate of 7.0 per minute between 7.00 PM and 11:00 PM. Given below are three scenarios for the number of hits to the website. Compute the probability of each scenario between 8:33 P.M. and 8:35 PM Interpret each resut (a) exacty so (b) fewer than sbx (c) at least six (a) P(6) = 5 (Round to four decimal places as needed.) On about 5 of every 100 time intervals between 8:33 PM. and 8:35 PM, the website will receive at most 5 ht(s) (Round to the nearest whole number as needed.) (b) Px <6) - 5 (Round to four decimal places as needed.) On about 5 of every 100 time intervals between 833 PM. and 835 PM, the website will receive at most 5 hit(s) (Round to the nearest whole number as needed.) (e) P(x 2 6) =5 (Round to four decimal places as needed.) On about 5 of every 100 time intervals between 8:33 PM. and 835 PM, the webste will receive at most 5 hit(s) (Round to the nearest whole number as needed)

The mean percent of childhood asthma prevalence in 43 cities is 2.39%. A random sample of 33 of these cities is selected. What is the probability that the mean childhood asthma prevalence for the sample is greater than 2.6%? Interpret this probability. Assume that o = 1.31%. The probability is (Round to four decimal places as needed.) 4

Need help with parts C & D The proportion of Americans who have frequent migraines is 15.2% according to the CDC. An acupuncturist claims that her treatment can reduce this figure significantly. A random sample of 191 Americans is administered the acupuncturists treatment and 25 report experiencing migraines.a. State Hypotheses to the scenario using the correct symbols. b. What is the sample proportion? (Round to 2 decimal places) ˆpp^= c. Suppose the P-value is calculated to be 0.0318What would your decision be for this test using α=α= 0.025? fail to reject the null accept the null reject the null d. Write a conclusion in terms of the acupuncturist's claim. Use the model provided by the instructor. Assume no errors were made.

The level of nitrogen oxides (NOX) and nonmethane organic gas (NMOG) in the exhaust over the useful life (150,000150,000 miles of driving) of cars of a particular model varies Normally with mean 8080 mg/mi and standard deviation 66 mg/mi. A company has 1616 cars of this model in its fleet. Using Table A, find the level ?L such that the probability that the average NOX + NMOG level ?¯x¯ for the fleet greater than ?L is only 0.030.03 ? (Enter your answer rounded to three decimal places. If you are using CrunchIt, adjust the default precision under Preferences as necessary. See the instructional video on how to adjust precision settings.)