NEED HELP 10 POINTS
1 answer:
Answer:
1/28
Step-by-step explanation:
Before picking 1st song
Total songs = 8
Rock songs = 2
Probability of picking a rock song as the first song,
= 2 rock songs out of 8 total songs remaining
= 2/8
After picking 1st song
Total songs left over = 7
Rock songs left over = 1
Hence, Probability of picking a rock song as the second song,
= 1 rock song out of 7 total songs remaining
= 1/7
Probability of picking 2 consecutive rock songs,
= x
=
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Answer: (0.63, 7.07)
Step-by-step explanation:
The confidence interval for population proportion is given by :-
Given : ;
Significance level :
Critical value :
Now, a 90% confidence interval for population proportion will be :-
Hence, a 90% confidence interval for population proportion = (0.63, 7.07)