Which facts could be applied to simplify this expression?Ckeck all that apply 5x+3y+(-x)+6z
2 answers:
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This changes to a mix fraction
3 [tex] \frac{5}{9}
This changes to a mix fraction
3 [tex] \frac{5}{9}
Answer:
We reject the null hypothesis and accept the alternate hypothesis. Thus, it be concluded that the population mean is less than 20.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 60
Sample mean, = 19.5
Sample size, n = 60
Alpha, α = 0.05
Population standard deviation, σ = 1.8
First, we design the null and the alternate hypothesis
We use One-tailed z test to perform this hypothesis.
Formula:
Putting all the values, we have
Now,
Since,
We reject the null hypothesis and accept the alternate hypothesis. Thus, it be concluded that the population mean is less than 20.