Basic Math question and answers for September 08, 2023
- Q 1. Z is a standard normal variable. Find the value of Z in thearea to the left of Z is 0.9279. The area to the right of Z is0.1539.2. Given...
- Q ina random sample of 500 people aged 20-24, 110 were smokers. in arandom sample of 450 people aged 25-29, 65 were smokers. test theclaim that the proprtion of smokers age...
- Q Select all of the possible alternative hypotheses from the listbelow.Question optionsp = 0.37p>0.84p<0.42p?0.10
- Q How to set up experimental design for 3 factors at 4 differentlevels. I get in total I should end up with 81 experimental runs.Can you help me to determine how...
- Q Consider the following results for independent samples takenfrom two populations.Sample 1Sample 2n1 = 400n2 = 300p1 = 0.54p2 = 0.38(a) What is the point estimate of the difference between the...
- Q CNNBC recently reported that the mean annual cost of autoinsurance is 960 dollars. Assume the standard deviation is 213dollars. You take a simple random sample of 70 auto insurancepolicies. Find...
- Q A drapery store manager was interested in determining whether anew employee can install vertical blinds faster than an employeewho has been with the company for two years. The manager takesindependent...
- Q two fair dice are each rolled once. Let X denote the absolutevalue of the difference between the two numbers that appear.List all possible values of XFind the probability distribution of...
- Q The amount of time (in minutes) that a party hat to wait to beseated in a restaurant has an exponential distribution with a mean15. Find the probability that it will...
- Q Statistics Problem:You have been asked to engage in one final project for thepolitical organization for which you have been working. This timeyou wish to study the nature of the relationship...
- Q The ages of a group of 141 randomly selected adult females havea standard deviation of 18.9 years. Assume that the ages of femalestatistics students have less variation than ages of...
- Q SUPPLY PAIRLPZara warehouse -> Zara Store24NY Distribution Center -> Zara warehouse23Inditex factory -> NY Distribution Center412Bullwhip ratio for pair "Zara warehouse -> Zara Store" =2.5Bullwhip ratio for pair "NY Distribution...
- Q Calculate ?(? < 8) if: (i) ? is the number of distinctionsreported in a year by 20 Colleges. Each College producesdistinctions at the rate of 0.2 per year independently of...
- Q Study was done on body temperatures of men and women. Theresults are in the table. Assume that the two samples areindependent simple random samples selected from normallydistributed populations and do...
- Q Students are classified according to religious preference(Buddhist, Jewish,Protestant, Roman Catholic, or Other) and political affiliation(Democrat, Republican,Independent, or Other).RELIGIOUS PREFERENCE AND POLITICALAFFILIATIONRELIGIOUS PREFERENCEPOLITICALAFFILIATION BUDDHIST JEWISH PROTESTANT ROM. CATH. OTHERTOTALDemocrat 30 30...
- Q The following data represent crime rates per 1000 population fora random sample of 46 Denver neighborhoods.†63.236.326.253.265.332.065.066.368.935.225.132.554.042.477.5123.266.392.756.977.127.569.273.871.558.567.278.633.274.945.1132.1104.763.259.675.739.269.987.556.0154.285.577.584.724.237.541.1(a) Use a calculator with mean and sample standard deviationkeys to find the sample mean...
- Q The continuous random variables ? and ? have the joint p.d.f.??,? given by?(?, ?) = { ?^ (????) , ? > 0, ? > 00 otherwisea) Find the conditional p.d.f....
- Q You were interested in how long the average psychology major atyour college studies per night, so you asked 10 psychology majorsto tell you the amount time they study.You were given...
- Q A random sample of 30 quart cartons of ice cream was taken froma large production run. Their mean fat content was 12.6 percentwith a standard deviation of 1.25 percent. Based...
- Q Health insurers are beginning to offer telemedicine servicesonline that replace the common office visit. Wellpoint provides avideo service that allows subscribers to connect with a physicianonline and receive prescribed treatments....
- Q Of all cities in the United States, Amherst, New York, has thefewest number of days per year clear of clouds, 4.4. Other citieswith very few clear days include Buffalo, New...
- Q The fill amount of bottles of a soft drink is normally?distributed, with a mean of 2.0 liters and a standard deviation of0.08 liter. Suppose you select a random sample of...
- Q My NotesTotal plasma volume is important in determining the requiredplasma component in blood replacement therapy for a personundergoing surgery. Plasma volume is influenced by the overallhealth and physical activity of...
- Q A health psychologist tests a new intervention to determine ifit can change healthy behaviors among siblings. To conduct the thistest using a matched-pairs design, the researcher gives one siblingan intervention,...
- Q Refer to the accompanying data set of mean? drive-throughservice times at dinner in seconds at two fast food restaurants.Construct a 95?% confidence interval estimate of the mean?drive-through service time for...
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