Find p and q , if X1 = 11, n1 = 30, X2 = 28, and n2 = 80

Find p and q , if X1 = 11, n1 = 30, X2 = 28, and n2 = 80

A study of cats and dogs found that 30 of 60 cats and 11 of 40 dogs slept more than 10 hours per day. At the level of significance, is there sufficient evidence to conclude that a difference exists...

A gardener buys a package of seeds. Seventy-six percent of seeds of this type germinate. The gardener plants 110 seeds. Approximate the probability that fewer than 77 seeds germinate.

A nonnegative integer-valued random variable X has a CDF of the form F(x)=1-(1/5)^x for x=1,2,.....and zero otherwise. Find P(X is odd)? could you please help me with that?

A lot consists of 15 articles of which 8 are free of defects ,4 have minor defects and 3 have major defects.Five articles are selected at random without replacement find probability that at most one...

Suppose a lie detector test has the following properties.If the suspect is telling the truth,the lie detector will correct say so with probability 0.85.if the suspect is lying ,it will correctly identify...

A bus starts with five people and makes 10 stops . assume that passengers are equally likely to get off at any stop. A)describe the sample space and calculate the number of different outcomes...

A computer terminal can pick up an erroneous signal from the keyboard that does not show up on the screen. This creates a silent error that is difficult to detect. Assume that for a particular...

math sat scores are normally distributed with mean 500 and standard deviation of 100 ten students are selected at random what is the probability that at least one scored 650 or better? please...

There are 40 people on the Western Dubuque faculty. Of these 40, 15 are men and 25 are women. Use this information to answer the following questions. a. A committee of 8 is to be selected...

assume that x and y are independent with x ~EXP(2) and Y~Exp(1) Find the probability that the roots of the equation h(t)=0 are real where h(t)=t^2+2tx+y Could you please help...

a study of 2958 collegiate soccer players showed that in 46 anterior cruciate ligament tears, 36 were in women. Calculate the percentages of tears for each gender

A multiple choice quiz has 10 questions each with four alternatives. A passing score is 6 or more correct. If a student attempts to guess the correct answer to each question what is the probability...

The random variable X has pdf given by f(x)=(1+x),-1<x≤0 and f(x)=(1-x),0<x<1 & and f(x)=(1+x),-1<x<0 and f(x)=(1-x),0<x<1...

The random variable X has pdf given by f(x)=(1+x),-1<x≤0 and f(x)=(1-x),0<x<1 which function can I choose to find the mean...

Could you explain to me how can we find percentile of the distribution of a continuous random variable since I search on internet but I did not find ? Thanks in advance

A bag contains 20 marbles: 5 yellow, 2 white, 3 blue, and 10 green. If 4 are selected at random, find the probability that a.2 are yellow, with replacement b. 2 are yellow, without...

i am someone that needs help in math!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Find the range, variance, and standard deviation. Express answers using appropriate units, such as "minutes." Presidential Longevity: Refer to Data Set 12 in Appendix...

Suppose a geyser has a mean time between eruptions of 96minutes. If the interval of time between the eruptions is normally distributed with standard deviation 20 minutes, answer the following questions: what...

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