7 hours a week. One hour a day
Answer:
Z-test is a statistical test used to check weather two means are significant or not for unknown variance and large sample size.
Z = (M - μ) ÷ √(σ² / n)
where, M = Sample Mean = 66.075
μ = Population Mean = 90
σ² = Population Variance = 15
Now, Calculating the value of Z-test:
Z = (66.075 - 90) ÷ √(225 ÷ 40)
Z = -23.925 ÷ 2.37171
Z = -39.06936
The value of Z is -39.06936.
The value of p is < .00001 at 90% confidence level.
If the p-value is less than value of α, We accept the null- hypothesis otherwise reject.
The result is significant at p < .10.
Thus, we accept the null hypothesis.
Answer:
A, 61 degrees
Step-by-step explanation:
Since the two angles are supplementary, this means that they add up to 180 degrees. m=180-119=61 degrees, or option A. Hope this helps!
Answer:
Most likely yes... there is a problem in the way you asked your question ...
if the question is then the answer is yes and the constant is -4/5's
If by some chance the actual question is (you can not tell by the way y0u presented tis problem.. then the answer would be NO it would be "inverse" relation
Step-by-step explanation: