Answer:
Check the explanation
Step-by-step explanation:
Below are the null and alternative Hypothesis,
Null Hypothesis, H0: μ = 300000
Alternative Hypothesis, Ha: μ < 300000
Test statistic,
z = (xbar - mu)/(sigma/sqrt(n))
z = (288000 - 300000)/(80000/sqrt(25))
z = -0.75
P-value Approach
P-value = 0.2266
As P-value >= 0.05, fail to reject null hypothesis.
Answer:
d= 3.6 harrryuuyyyyyytrrrrttppwkkkk
Answer:

Step-by-step explanation:
<u>Decimal to Fraction Conversion</u>
We have the decimal number 0.285
It can be expressed as:

The fraction can be simplified by dividing by 5:

Since 57 and 200 have no more common factors, this is the simplified equivalent fraction.

Answer:
3/4 and 10/12 is NOT EQUIVALENT
in order for these to be equivalent, it would have to be 9/12
Step-by-step explanation:
May I have brainliest please? :)
Answer:
B. There is not sufficient evidence at the 0.02 level of significance that the new technique reduces training time.
Step-by-step explanation:
We are given that using traditional methods it takes 107 hours to receive an advanced flying license.
A researcher believes the new technique may reduce training time and decides to perform a hypothesis test.
Let
= <u><em>average training time to receive an advanced flying license</em></u>
So, Null hypothesis,
:
107 hours {means that the new technique doesn't reduce training time}
Alternate Hypothesis,
:
< 107 hours {means that the new technique may reduce training time}
Now, it is stated that after performing the test on 50 students, the researcher decides to reject the null hypothesis at a 0.10 level of significance.
As we know that if the test statistics value is rejected at a 10% level of significance, then it must not be rejected at the 0.02 level of significance.
This means that there is not sufficient evidence at the 0.02 level of significance that the new technique reduces training time because our null hypothesis has not been rejected.