Question

According to a certain government agency for a large​ country, the proportion of fatal traffic accidents in the country in which the driver had a positive blood alcohol concentration​ (BAC) is

0.330.33.

Suppose a random sample of

106106

traffic fatalities in a certain region results in

4646

that involved a positive BAC. Does the sample evidence suggest that the region has a higher proportion of traffic fatalities involving a positive BAC than the country at the

alpha equals 0.1α=0.1

level of​ significance?

Because np 0 left parenthesis 1 minus p 0 right parenthesisnp01−p0equals=23.423.4

greater than>

​10, the sample size is

less than

​5% of the population​ size, and the sample

is given to be random,

the requirements for testing the hypothesis

are

satisfied.

​(Round to one decimal place as​ needed.)

What are the null and alternative​ hypotheses?

Upper H 0H0​:

pp

equals=

0.330.33 versus

Upper H 1H1​:

pp

greater than>

0.330.33

​(Type integers or decimals. Do not​ round.)

Find the test​ statistic,

z 0z0.

z 0z0equals=nothing

​(Round to two decimal places as​ needed.)

Answer 1

thank you.