You want to subtract the heights. 5 2/6-4 4/6=5 1/3-4 2/3=2/3.
Answer:
87.9
Step-by-step explanation:
To get this answer, look at the equation provided.
If x is the amount of cookies and 2.93 is the amount a singular cookie costs, substituting x with the amount of cookies (30) and multiplying that with the cost (2.93) will provide you the final answer/price of 87.9.
Hope this helps!
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.
