Statistics question and answers for July 30, 2023
- Q The monthly expenditures on food by single adults living in oneneighborhood of Los Angeles are normally distributed with a mean of$410 and a standard deviation of $75. Determine the percentage...
- Q You have been asked to conduct astudy related to consumer loyalty toward three different retailformats (i.e., department stores, specialty stores, and off-priceretailers). After gathering background information, you decide tofocus your...
- Q In Canada, do young males (Y) weigh more than older males (O) onaverage? To investigate this question, weights of eighteen malesrandomly selected from each group were recorded. Summary statisticsare given...
- Q In order to determine whether there was a difference inthe survival rate between females and males, a two-sampleproportion test was applied. The following is the output for thetest with some...
- Q The company who makes Chips Ahoy cookies states that there is anaverage of 23 chocolate chips per cookie. You take a sample ofcookies and count the chips. For your sample...
- Q In a random sample of 480 males, it was found that 14.4% writewith their left hand. In a random sample of 1040 females, it wasfound that 9.6% write with their...
- Q On the planet of Mercury, 4-year-olds average 3 hours a dayunsupervised. Most of the unsupervised children live in ruralareas, considered safe. Suppose that the standard deviation is 1.4hours and the...
- Q ***PLEASE TYPE ANSWERS***Five students were tested before and after taking a class toimprove their study habits. They were given articles to read whichcontained a known number of facts in each...
- Q In the US, 44.3% of all people have type O blood, 41% have typeA blood, 10.2% have type B blood and 4.5% have type AB blood. Aresearcher wants to see...
- Q Johnson has recently opened his workshop at the main street of amajor city in the North East. Johnson estimates about 20 carsarriving at his workshop for repairs every day. Based...
- Q An employee of a small software company in Minneapolis bikes towork during the summer months. He can travel to work using one ofthree routes and wonders whether the average commute...
- Q 1. A researcher wants to know if the typing speed of a secretaryin words per minute is related to the time in hours that it takesto learn the new word...
- Q Overproduction of uric acid in the body can be an indication ofcell breakdown. This may be an advance indication of illness suchas gout, leukemia, or lymphoma.†Over a period of...
- Q Suppose x has a distribution with μ = 10 and σ = 3.(a) If a random sample of size n = 47 is drawn, find μx, σ x andP(10 ≤...
- Q Two different rifles are tested at the shooting range. Rifle onewas ï¬red 190 times and the target hit 158 times. Rifle two was shot140 times and the target hit 107...
- Q An elevator has a placard stating that the maximum capacity is1304 lb long dash—88 passengers.​ So, 88 adult male passengers canhave a mean weight of up to 1304 divided by...
- Q Duke Energy reported that the cost of electricity for anefficient home in a particular neighborhood of Cincinnati, Ohio was$107 per month. A researcher believes that the cost of electricityfor a...
- Q The manager of a travel agency asked you to come up with aforecasting technique that will best fit to the actual demand forpackaged tours. You have observed and recorded the...
- Q 8. For each of the following, identify the distribution based onthe MGF. Be sure to specify name of distribution and value(s) ofparameter(s).(a) MX(t) = (0.3 + 0.7 e t )...
- Q Please answer the following questions based on the givengraphYEARYear NumberDomestic1997132101131998232942441999331508262000432444212001533583992002632891482003733261112004834230242005937729522006104349081200711493709920081251068602009134704189(1) Create a Time Series(Trend)Model  for  passengers on Domesticflights. (To zero decimal places) The predicted amount ofpassengers for 2010 on Domestic flights is...
- Q 1)A professor using an open-source introductory statistics bookpredicts that 60% of the students will purchase a hard copy of thebook, 25% will print it out from the web, and 15%...
- Q The Florida Company was flooded by a Hurricane and somehow lostpart of their forecasting data. The missing values in the followingtable must be recalculated from the remaining data. Exponentialsmoothing constant...
- Q The StatCrunch data set for this question contains the datameasurements described in Question 11. (H0 :µ1 - µ2 ≤ 0HA : µ1 - µ2 > 0)Assume that the two samples...
- Q A survey of 20randomly sampled judges employed by the state of Florida found thatthey earned an average wage (including benefits) of $63.00 perhour. The sample standard deviation was $5.90 per...
- Q 1. A research institute poll asked respondents if they feltvulnerable to identity theft. In the poll of 968 randomly selectedAmerican adults, 511 of them responded with “yes.†a). Find the...
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