Answer:
There is no enough evidence to reject the claim using a level of significance of 5%
Step-by-step explanation:
Let p be the true proportion of homeowners in Omaha who own a lawnmower. We want to test
vs
(two-tailed alternative).
We have a large sample of size n = 500 and a point estimate for p is
. The test statistic is given by
where
is the standard error of
when
is true. The observed value is
= 1.4064 which comes from a standard normal distribution. Because we want to use a level of significance of 5%, our rejection region is RR={z | z < -1.96 or z > 1.96} where -1.96 and 1.96 are the 2.5th and 97.5th quantiles respectively. Because 1.4064 does not belong to RR, we fail to reject the null hypothesis.
Answer: 3:1
Step-by-step explanation:
I start with putting it as 36:12 than reduce. Both sides are divisible by 12 so you end up with 3:1
20+4x. Multiply the 4 by the 5 and bring the sign over. Do same for x
Step-by-step explanation:
40=1.6d-3.2
43,2=1.6d
27=d