Answer:
7, 8, 8,7,8,9
Step-by-step explanation:
brainliest plss!!<3
Answer:
There is enough not evident to support dealer's claim that his sales is no more than $80.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = $80
Sample mean,
= $91
Sample size, n = 20
Alpha, α = 0.05
Sample standard deviation, s = $21
First, we design the null and the alternate hypothesis
We use one-tailed t test to perform this hypothesis.
Formula:
![t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }](https://tex.z-dn.net/?f=t_%7Bstat%7D%20%3D%20%5Cdisplaystyle%5Cfrac%7B%5Cbar%7Bx%7D%20-%20%5Cmu%7D%7B%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D%20%7D)
Putting all the values, we have
![t_{stat} = \displaystyle\frac{91 - 80}{\frac{21}{\sqrt{20}} } = 2.3425](https://tex.z-dn.net/?f=t_%7Bstat%7D%20%3D%20%5Cdisplaystyle%5Cfrac%7B91%20-%2080%7D%7B%5Cfrac%7B21%7D%7B%5Csqrt%7B20%7D%7D%20%7D%20%3D%202.3425)
Now,
Since,
The calculated test statistic is greater than the critical value, we fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.
Conclusion:
There is enough not evident to support dealer's claim that his sales is no more than $80.
Answer:
1 +10=11 (since 0 is neither negative or positive the first and second positive integerswith 1 or 0