Answer:
Step-by-step explanation:
H0 : μ = 46300
H1 : μ > 46300
α = 0.05
df = n - 1 = 45 - 1 = 44
Critical value for a one tailed t-test(since population standard deviation is not given).
Tcritical = 1.30
The test statistic :(xbar - μ) ÷ (s/sqrt(n))
The test statistic, t= (47800-46300) ÷ (5600√45)
t = 1500
t = 1500 / 834.79871
t = 1.797
The decision region :
Reject H0: if t value > critical value
1. 797 > 1.30
Tvalue > critical value ; We reject H0
Hence, there is sufficient evidence to conclude that cost has increased.
I believe the answer is 420
Answer:
1.625 gallons
Step-by-step explanation:
.25(25%) times 6.5
The measure of angle D to the nearest tenth of a degree is 47 degrees
<h3>Application of SOH CAH TOA</h3>
This theorem is used to determine the measure of sides and angles of a triangle.
According to the theorem
tan theta = opp/adj = 1.055
theta = arctan(1.055)
theta = 46.53 degrees
Hence the measure of angle D to the nearest tenth of a degree is 47 degrees
Learn more on SOH CAH TOA here: brainly.com/question/20734777
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So.. if you notice the picture below.. .the length is that much
thus

take the derivative of A, zero it out, and then check the critica points for any maxima by using the first-derivative test