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ollegr [7]
3 years ago
7

Imagine that you're on a game show, and you're given the choice of a mystery prize behind one of three doors: Behind one door is

a car; behind the other two doors are goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to stick with door No. 1 or switch to door No. 2?" What do you do? Would you stick with your original pick or switch? Would either choice give you a better chance to winning the car?
Mathematics
1 answer:
NNADVOKAT [17]3 years ago
5 0

Answer:

Switching would be better.

Step-by-step explanation:

If you pick a door at random, you have a 33.33% chance to get the car, and a 66.67% chance that the car is in the other two doors, 33.33% in the other two doors. (Let's pick door 1 for this example)

Saying that door 2 has a goat means that door 2 has a 0% chance of having a car. Where did that 33.33% go to? It went to door 3. Hence, door 3 now has a 66.67% chance of having a car.

Therefore, you should swap.

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snow_lady [41]

Answer:

$22

Step-by-step explanation:

The computation of the amount spent is shown below:

Since in the question it is mentioned that if you bought 2 than you got one bottle free

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NARA [144]

Answer:

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Step-by-step explanation:

This is the right answer

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) In 2005, the Health Department in Marion County, Indiana measured the heights and weights of 90,147 school-age children, allow
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Answer:

Since the calculated z=40  falls in the critical region this indicates that the true obesity rate for children in Marion County is different from the national average at the 0.05 significance level. We reject the null hypothesis that population proportion is 0.17.

Step-by-step explanation:

The national average is 17% .The z proportional hypothesis test is used.

1) Let the null and alternate hypothesis be

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2 years ago
A train traveled 399 miles in 7 hours. Find the train's speed.
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The train is traveling at 57 miles per hour.
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