You can buy 3 t-shirts for $22.50. write and solve a proportion that shows how many t-shirts you could buy with $110
1 answer:
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He can only invite 35 people
the cost per person = $3.50 + $5.00 = $8.50
dividing $300 by $8.50 determines the amount he can invite
= 35.29411...
He can invite 35 people at a cost of $8.50 × 35 = $297.50
Answer:
a) 3.52
b) 0.002399
c) At α = .05 we reject the null hypothesis.
Step-by-step explanation:
We are given the following information:
Population mean, μ = 6 μg per liter
Sample size, n = 12
Alpha, α = 0.05
6.94, 7.50, 5.87, 7.92, 8.66, 7.78, 7.95, 6.35, 6.16, 6.28, 5.68, 7.02
where are data points,
is the mean and n is the number of observations.
First, we design the null and the alternate hypothesis
We use One-tailed t test to perform this hypothesis.
a) Formula:
Putting all the values, we have
b) P-value for one tailed t-test at 11 degree of freedom and α = 0.05 is 0.002399
c) Since P-value < 0.05
The result is insignificant.
Thus, at α = .05 we reject the null hypothesis.