A camera store sells an average of 100 cameras per month. The cost of having a camera in inventory during a period is 30% of the price the store pays for the camera. It costs the store $120 dollars each time the store places an order with its supplier. The price to pay per camera depends of the number of cameras ordered. Each time the camera store places an order, how many cameras will should they ask? at what price should he pay them?

Q: c) The random variable X is normally distributed such that X~N(?, 12). It is known that ?(? > 32) =…

A: Every unique pair of μ and σ values defines a different normal distribution. Every change in a…

Q: Find the mean of the following probability distribution? X P(x) 0.4386 0.3276 0.0299 0.0192 0.1847 0…

A: Given X.                     P(x)  0                     0.4386   1                     0.3276   2…

Q: In the past, when elementary school children in a large city were screened, 25% were found to have…

A: The question is about hypo. testing Given : Popl. prop. of children found to have auditory defects (…

Q: Name two limitations of this test.

A: 1). This test is effective for small frequencies.

Q: Determine k, so that ƒx,y(x, y) = [k(x+y) 0<x<1, 0<y<1 0 otherwise is a joint pdf.

A:

Q: A certain drug is used to treat asthma. In a clinical trial of the drug, 18 of 289 treated subjects…

A: given data, claim:p&lt;0.11n=289x=18p^=xn  =18289  =0.062284we have to complete hypothesis for the…

Q: Suppose a basketball player makes 60.1% of shots and that the probabilty of making each shot is…

A: Solution-: Given: n=5,p=0.601 (60.1%) We want to find P(at least one shot)=?

Q: selor has traditionally seen that the proportion p of all married couples for whom her communication…

A: given data, n=250x=194α=0.10p^=xn=194250=0.776

Q: 2. A randomly selected 580 employed adults with 464 of them saying they are satisfied with their…

A:

Q: alternative hy the original claim. Use the P-value method and the normal distribution as an…

A: Null and alternative hypotheses: Null hypothesis: Null hypothesis is a statement which is tested for…

Q: A recent poll indicates that 48% of all registered voters in America plan to vote for a specific…

A: given data, p=0.48n=12q=1-0.48=0.52p(X=x)=nCx *px*q(n-x) (binomial distribution)x= no. of ragisterd…

Q: t would be the estimated y-intercept.

A:

Q: In order to evaluate the effects of stress on the development of stomach ulcers, three separate…

A: It is given in this study three separate groups of monkeys were taken.

Q: A survey of 1515 American adults​ asked, "Do you feel overloaded with too much​ information?" The…

A: A survey of 1515 American adults​ asked, "Do you feel overloaded with too much​ information?" The…

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: Given: Mean μ = 100 Standard deviation σ = 15 Formula Used: Z = X-μσX = μ+Zσ

Q: You toss a coin AND roll a die. What is the probability of getting a tail and a 4 on the die?

A:

Q: If a page is selected, find the probability that it has 2 misprints. Round the probability to at…

A: Mean  λ=270430  =0.6279

Q: A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that…

A: Given information- We have given that a bag contains 6 black and 8 white balls. So, the total number…

Q: In the probability distribution to the right, the random variable X represents the number of hits a…

A: The table shows the number of hits a baseball player obtained in a game and their probabilities.

Q: A carton of 12 rechargeable batteries contain one that is defective. In how many ways can the…

A: Given,no.of defective batteries=1no.of non defective batteries=11Total no.of batteries=12

Q: n a study of the accuracy of fast food​ drive-through orders, one restaurant had 31 orders that were…

A: GIVEN DATA, X=31n=355p^=xn =31355 =0.0873α=0.10claim :p=0.10

Q: A waiter believes the distribution of his tips has a model that is slightly skewed to the right,…

A: Given data: Mean = $9.70 Standard deviation = $4.60 Sample size = 40

Q: Assume that a procedure yields a binomial distribution with n = 763 trials and the probability of…

A: Given n=763 P=4/15

Q: Quick Start Company makes 12-volt car batteries. After many years of product testing, the company…

A: Given Mean=46.6 Standard deviation=7.9

Q: Claim: A majority of adults would erase all of their personal information online if they could. A…

A: From the provided information, Sample size (n) = 476 From which 64​% of them would erase all of…

Q: 1. Assume that women's heights are normally distributed with a mean of 63.6 inches (5'3.6") and a…

A: From the provided information, Mean (µ) = 63.6 Standard deviation (σ) = 2.5 X~N (63.6, 2.5)

Q: In a sample survey of the safety explosives' used in certain mining operations, explosives…

A: We have given that n = 250x = 95p̂ = x/n = 95/250 = 0.38 Significance level (α) = 1 - 0.95 = 0.05

Q: A hospital receives a pharmaceutical delivery each morning at a time that varies uniformly between…

A: Let X :A hospital receives a pharmaceutical delivery each morning at a time

Q: n order to estimate the proportion of women over 50 who have annual mammograms with a 95% confidence…

A:

Q: In a study of the accuracy of fast food​ drive-through orders, one restaurant had 31 orders that…

A: Givenx=31sample size(n)=355significance level(α)=0.10

Q: A safety engineer feels that 30% of all industrial accidents in her plant are caused by failure of…

A:

Q: page 1 of the table. Click to view page 2 of the table.

A: Given Mean=100 SD=15

Q: A repeated measures experiment investigates if people can tickle themselves. A mean difference of…

A: Guven that, A mean difference of 3.04 milliseconds is found between the Tickled By Self (485.17ms)…

Q: A decade-old study found that the proportion, p, of high school seniors who believed that "getting…

A: It is given that among the 245 high school seniors in his random sample 191 believe that "getting…

Q: The following are the ratings of males by females in an experiment involving speed dating. Use the…

A: To calculate: Five number summary

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: Given that, p^=0.62n=429P=0.50 The formula for calculating the test statistic is,

Q: Calculate the Mean Absolute Deviation for the following data: Actual Forecast 94 90.3 [T 85 88.2 90…

A: Given n=4

Q: This is the question  The age of children in kindergarten on the first day of school is uniformly…

A: Given,A random variable X~U(4.85 , 5.93)f(x)=15.93-4.85   ;  4.85≤X≤5.93f(x)=11.08     ;…

Q: The mean life of a tire is 30 000 km. The standard deviation is 2000 km. a. About 68% of all tires…

A: The empirical rule states that if a distribution is unimodal and symmetric i.e. more or less…

Q: Fill out the ANOVA table below: Factor Stream Order Sum Sq 0.09 Error 0.19 Total 0.28 df Mean Sq F…

A: Given that, After a drought, a researcher noticed bright orange deposits around various creeks.…

Q: A study in which children are randomly assigned to receive either a newly formulated vaccine or the…

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: Researchers were interested in assessing the effects of a new treatment was assessed in all…

A: Calculation of mean and variances for each  groups: For 0 Weeks: sample size (n1) = 5 sample mean…

Q: Suppose that 77% of the students at a small private university carry student loans. For a SRS of…

A: Find the number of sample from this population need to be to ensure that the distribution of the…

Q: Researchers were interested in assessing the effects of a new treatment on seasonal affective…

A: Given data: Subject 0 weeks 2 weeks  4 weeks 1 28 45 69 2 32 43 72 3 30 47 65 4 29 45 75…

Q: Find the probability that neither adult thinks most celebrities are good role models.

A: From given data we have : Total Adults = 800 Adults thinking most celebrities are good roll models =…

Q: A poll conducted in 2013 found that 52% of US-based adult Twitter users get at least some news from…

A: Given P=0.52 SE=0.024

Q: A bag contains 3 red balls, 5 yellow balls and 7 pink balls. If one ball is drawn at random from the…

A: Probability is a chance of getting a possible outcome of any random event. It is defined as the…

Q: A certain type of light bulb has an average life of 1100 hours, with a standard deviation of 50…

A: given data n = 80000 normal distributionμ = 1100σ = 50n(x≥1100) = ?

Q: K Find the value of the permutation. 9P4 9P4 = 3024 (Type a whole number.)

A: Solution:  The formulae for the permutation is  nPr=n!(n-r)!