Question

In: Statistics and Probability

Google it: According to a recent report, 68% of Internet searches in a particular month used...

Google it: According to a recent report,

68%

of Internet searches in a particular month used the Google search engine. Assume that a sample of

searches is studied. Round the answers to four decimal places.

Part 1 of 4

(a) What is the probability that exactly

of them used Google?

The probability that exactly

of them used Google is .

Part 2 of 4

(b) What is the probability that

or fewer used Google?

The probability that

or fewer used Google is .

Part 3 of 4

of them used Google?

The probability that more than

of them used Google is .

Part 4 of 4

(d) Would it be unusual if fewer than

used Google?

It ▼(Choose one) be unusual if fewer than

used Google since the probability is .

Solutions

Expert Solution

d).the probability that fewer than 10 of then used google is :-

= P(X<10)

= 0.0151 [ in any blank cell of excel type =BINOM.DIST(9,21,0.68,TRUE) ]

It seems to be unusual if fewer than 10 used Google since the probability is 0.0151, less than 0.05.

*** if you have any doubt regarding the problem ,please write it in the comment box...if satisfied,please UPVOTE.

orchestra answered 1 year ago

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