2) The administrator at your local hospital states that onweekends the average wait time for emergency roomvisits is 10 minutes. Based on discussions you have hadwith friends who have complained on how long theywaited to be seen in the ER over a weekend, you disputethe administrator's claim. You decide to test yourhypothesis. Over the course of a few weekends, yourecord the wait time for 41 randomly selected patients.The average wait time for these 41 patients is 11minutes with a standard deviation of 3 minutes. Do youhave enough evidence to support your hypothesis thatthe average ER wait time exceeds 10 minutes? You optto conduct the test at a 1% level of significance.

There are 41 randomly selected patients with an average of 11 and a standard deviation of 3 minutes.…

Answered: 2) The administrator at your local…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Over at NAIA, you are observing the average length of flight delays (excluding flights that leave on time). Your notes for ten randomly chosen days are here: Day Ave. delay (hrs:min) 1 2:00 2 1:48 3 0:19 4 0:25 5 2:18 6 0:43 7 0:13 8 0:17 9 0:34 10 3:12 If the airport claims that the delays will be no more than an hour on average, check his claim by doing the following: (a) Write the null hypothesis. (b) Write the alternative hypothesis. (c) Formulate and calculate the test-statistic. Is it a one-tail or two-tailed test? Did the airport told you the truth at 95% confidence level? (d) Determine the confidence interval
The temperature of a certain chemical process is thought to be related to the time it takes for the process to reach completion. Out goal is to that relationship so that we can use it to predict TIME TO REACH COMPLETION at various TEMPERATURES. 14 trials are set up and the time for the process to complete is measured for each of the different temperatures. The data is presented here:(data is in the image added to the question as well as more questions to answer)
The average monthly rent for one-bedroom apartments in New York has been $900. Because of the inflation in the housing market, it is believed that there has been an increase in the average rental. The correct hypotheses to be tested are Ho: μ ≥ 900 Ho: μ = 900 Ho: μ > 900 Ho: μ 900.
The National Institute of Standards and Technology (NIST) offers a wide variety of “standard reference materials” (SRMs) with accurately specified analyte concentrations. SRM 1951c is intended in part for “evaluating the accuracy of clinical procedures for the determination of total cholesterol . . . in human serum.” The certified total cholesterol is 6.244 ± 0.072 mmol/L. For the sake of this question, let’s treat 6.244 mmol/L as its “true” value (μ). We will use this standard to test a method with an intrinsic variability (for an experienced analyst) of σ = 0.131 mmol/L. 1. For what value of z does exactly 95% of the area under a Gaussian curve lie between ± z? Use this multiplier to find the range of measured cholesterol concentrations that would include 95% of the trials from the “parent population” (μ and σ) given above. 2. Calculate z for a trial in which the measured total cholesterol concentration is 6.302 mmol/L. 3. What is the probability that a trial will give a cholesterol…
Consider a two-sided CUSUM chart with k=0.5 and h=5. If the process mean shifts by 1σ, then the approximate ARL1 value of this chart is a. 10.34 b. 9.43 c. 3.94 d. 11.94 e. 4.39
Please review Section 11.1. Are you an impulse shopper? A survey of 800 grocery shoppers indicated that 36% of males and 42% of females make an impulse purchase every time they shop. Assume that the survey consisted of 400 males and 400 females. Let group 1 be the males and let group 2 be the females. a = 0.01 H, :T, = R, H :, # R, Calculate the test statistic: (Round to three decimal places as needed.) Determine the critical value: (Round to three decimal places as needed.) State the Conclusion: Please review Section 12.2. An agent for a residential real estate company in a suburb located outside a major city has the business objective of developing more accurate estimates of the monthly rental cost for apartments. Toward the goal, the agent would like to use the size of an apartment, as defined by square footage to predict the monthly rental cost. The agent selects a sample of 8 one-bedroom apartments and the data are shown. Size (Square Feet) Monthly Rent ($) 875 1550 850 1350 950…
A paper investigated the driving behavior of teenagers by observing their vehicles as they left a high school parking lot and then again at a site approximately mile from the school. Assume that it is reasonable to regard the teen drivers in this study as representative of the population of teen drivers. Amount by Which Speed Limit Was Exceeded Female Driver -0.1 0.4 1.1 0.7 1.1 1.2 0.1 0.9 0.5 0.5 (a) Use a .01 level of significance for any hypothesis tests. Data consistent with summary quantities appearing in the paper are given in the table. The measurements represent the difference between the observed vehicle speed and the posted speed limit (in miles per hour) for a sample of male teenage drivers and a sample of female teenage drivers. (Use males - females: Round your test statistic to two decimal places. Round your degrees of freedom down to the nearest whole number. Round your p-value to three decimal places.) t= df = P = Male Driver 1.4 1.2 0.9 2.1 0.7 1.3 3 1.3 0.6 2.1 (b) Do…
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DETAILS BRECMBC9 9.1.TB.016. ASK YOUR TEACHER Workers who manufacture belts are sometimes pald based on the number of belts they produce. Compute Ada's gross pay if she made 744 belts. The rate per belt is given by the differential plecework schedule below. Pay Level Items Produced Rate per Item 1 1-240 $3.20 Over 240 $4.13 O $2,604.00 O $2,849.52 O $3,372.00 O $3,840.72 21. DETAILS BRECMBC9 9.II.TB.005. ASK YOUR TEACHER Mary earned $45,258.75 for the past calendar year. How much did she pay for the year in social security and Medicare taxes? (Social Security Tax is 6.2% of gross wages up to $128,400. Medicare Tax is 1.45% of all gross wages.) O $3,156.29 O $3,309.29 O $3,462.29 O $3,844.79 22. DETAILS BRECMBC9 9.11.TB.003. ASK YOUR TEACHER MacBook Air 4h > 411 & 4. 7\ 2 3 6. delete E R T Y U D H. K C option command command option

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