Solve equation 3z=36
2 answers:
Answer:
Step-by-step explanation:
Z is the variable in this equation in this problem that we are looking for. Since z is next to the number 3. That means that whatever z is, it will be multiplied by 3.
3z = 36
The number we are trying to match is 36, so what times 3 equals 36?
Just do backwards equation,
z = 12
3(12) = 36
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Answer:
Step-by-step explanation:
Answer:
We fail to reject the null hypothesis at 0.05 significance level. We cannot say that less than 12% of trips include a theme park visit.
Step-by-step explanation:
let p be the proportion of trips included a visit to a theme park.
: p=0.12
: p<0.12
To test, we need to calculate test statistic of the sample proportion as:
z= where
- p(s) is the sample proportion of trips included visit to a theme park (
- p is the proportion assumed under null hypothesis. (0.12)
- N is the sample size (1565)
Using the numbers, z=
= −0.767 and p(z) is ≈0.222
Since 0.222 > 0.05 we fail to reject the null hypothesis.