Posted by tommy512 on Friday, June 7, 2013 at 8:37pm.
(c) The number of cars found to have unsafe tires among the 379 cars stopped at a roadblock for inspection (assume that 15% of all cars have one or more unsafe tires).
(i) Find the mean. (Give your answer correct to one decimal place.)
56.85.
(ii) Find the standard deviation. (Give your answer correct to two decimal places.) 6.79
.
(d) The number of melon seeds that germinate when a package of 60 seeds is planted (the package states that the probability of germination is 0.89.
(i) Find the mean. (Give your answer correct to one decimal place.)
Correct: 53.40.
(ii) Find the standard deviation. (Give your answer correct to two decimal places.)
3.10

check math problem  Nora 56, Friday, June 7, 2013 at 9:04pm
I got this one finally worked out right, but thanks anyway

check math problem  Nora 56, Friday, June 7, 2013 at 9:05pm
Sorry clicked on wrong problem, this guy may need help on this one.

check math problem  Ms. Sue, Friday, June 7, 2013 at 9:15pm
We know that Nora and Tommy are the same person.
Please use only one name for your posts.

check math problem  Nora 56, Friday, June 7, 2013 at 10:20pm
No they are not the same person, we are using the same computer....
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