Answer: x=5
x=−5
Step-by-step explanation:
<span>The inequality equation that can be used to
express Dexter’s earnings would be “50<e>100”. Since he earns no less
than 50, meaning his earnings cannot be below 50, thus the expression would be “more
than (<)”. In addition, he earns not more than 100, meaning his earnings
would not be above 100, thus the best expression would be “less than (>)”.</span>
Vibin fjn no longer in the hospital room for the first place and the only thing i could have is the one who is not working with
Answer:
We fail to reject the null hypothesis because -1.7678 does not fall inside the rejection region {z | z < -1.96 or z >1.96}
Step-by-step explanation:
We have that the machine will fill bottles according to a normally distributed process, let's say is a random variable that represents this process. We know that has a mean of 47 fluid ounces and a standard deviation of 0.4 fluid ounces. We have a sample of n = 50 bottles and the observed value .
We want to test
vs (two-tailed alternative)
We have n = 50 large enough, and the point estimator of the mean , which is normally distributed with the same mean than , i.e., , and with standard deviation given by . Therefore, our test statistic is
and
.
As we want a significance level of 0.05, we should find the values and , i.e., the 2.5th quantile and the 97.5th quantile for the standard normal distribution. These values are -1.96 and 1.96 respectively. The rejection region is given by {z | z < -1.96 or z >1.96}. We fail to reject the null hypothesis because -1.7678 does not fall inside the rejection region.
Answer:
28
Step-by-step explanation: