15 POINTS! What is the correct answer for Dean's problem? Explain where he went wrong.
1 answer:
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Look at the pictures.
1. D (y=3)
2. y=3
3. y=-2
4. y=4
5. B (52 lb)
1. D (y=3)
2. y=3
3. y=-2
4. y=4
5. B (52 lb)
Correct answer is: P(x<6) is 0.123 and it is usual.
Solution:-
Given that the time a person takes to decide which shoes to purchase follows normal distribution. Which has mean = 8.21 minutes and standard deviation 1.90
Then probability of individual takes less than 6 minutes is
P(X<6) =
=
= 0.1230
Typically we say an event with a probability less than 5% is unusual.
But here P(X<6) = 0.123 is greater than 5% hence this is usual.