A grocery store sells 6 bottles of water for $4.80 and 18 bottles of water for $22.50. Is the cost proportional to the number so
2 answers:
Answer:
<h2>No, because both operation don't have a Constant of Proportionality related.</h2>Step-by-step explanation:
We can see this calculating the Constant of Proportionality in both cases:
We can see that, the proportion is not a Constant, which means that costs are not proportional between the number of bottles sold.
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Answer:
We conclude that the mean amount of time that college students spend in the shower is equal to 5 minutes.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 5 minutes
Sample mean, = 4.61 minutes
Sample size, n = 15
Alpha, α = 0.05
Sample standard deviation, s = 0.75 minutes
a) First, we design the null and the alternate hypothesis
We use two-tailed t test to perform this hypothesis.
b) Formula:
Putting all the values, we have
c) Now, we calculate the p-value using the standard table.
P-value = 0.0638
d) Since the p-value is greater than the significance level, we fail to reject the null hypothesis and accept the null hypothesis.
We conclude that the mean amount of time that college students spend in the shower is equal to 5 minutes.
Option a) Fail to reject the claim that the mean time is 5 minutes because the P-value is larger than 0.05.