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...

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...

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Find the expierimental probability of not roll a 6. Write as fraction simplest form.

in a special raffle, a ticket costs $2.00. you Mark any four digits on a card (repetition and 0 are allowed). if you select the winning number, you win $15,000. what is the expected value?

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 company is conducting a survey to determine how prepared people are for a? long-term power? outage, natural? disaster, or terrorist attack. The frequency distribution on the right shows the results...

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...

conditional probability Professional athletes who play in the NLF are subject to random drug tests. Suppose the probability that the test shows a positive result given...

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 contest will award 100 winners with a voucher each. There are 300 participants. Elly joined the contest 3 times, but entering using her details, her sister's details, and her mother's details. What...

I am sending out a survey to 1500 people. They will each have a unique identifier. The unique identifier is the first two letters of your mothers maiden name, the day you were born and the first two...

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if you are dealt two cards successively (with replacement of the first)from a standard 52- card deck, find the probability of getting a heart on the first card and a diamond on the second.

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a tourist in France wants to visit 12 different cities.if the route is randomly selected, what is the probability that she will visit the cities in alphabetical order?

If a license plate has three letters followed by two numbers and ending with either a P or a D, how many plates can be made that are all different. Do not use any commas in your answer. (An...

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