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Wewaii [24]
3 years ago
12

A single card is selected from a deck. find the probability that it is a queen or a black card.

Mathematics
1 answer:
s2008m [1.1K]3 years ago
8 0
52 cards in a deck. 4 of those are queens. 52/2=26 (total # of black cards), 2 red queens. Total + of cards you could possibly draw as the favored car = 28 out of 52...,

This is where i lose the probability. It's greater than 50%. I hope this helps.
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Find a 95% confidence interval for the mean auditory response time for subjects with a visual response time of 200 ms. The 95% c
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Answer:

hello your question is incomplete attached below is the complete question

answer : ( 184.019 , 206.219 )

Step-by-step explanation:

The 95% confidence interval for the mean auditory response time for subjects with a visual response time of 200 ms can be calculated using this relationship below

y = Bo + B1 ( 200 )  = 195.118621 , sy =

hence a 95% confidence interval = 195.118621 ± 2.306( 4.813492) i.e.  ( 184.019 , 206.219 )

attached below is the remaining part the solution

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