Use the relationship between the angles in the figure to answer the question.
1 answer:
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Answer: A.
B. x represents the number of plant seeds she bought.
C. f(x) represents the total cost on her garden is the function of the amount she spent for setting up the garden and the total amount she spent to buy seeds.
D. If Samantha plants 55 seeds, the she spent total amount of $14.74.
Step-by-step explanation:
From the given question,
The total cost on her garden is the function of the amount she spent for setting up the garden and the total amount she spent to buy seeds.
Since, she spend one time amount of $0.90 on setting the garden but the cost of seeds depend on the number of seeds she buy.
If f(x) that represents Samantha's total cost on her garden, then x represents the number of plant seeds she bought.
, which represents the total cost on her garden is the function of the amount she spent for setting up the garden and the total amount she spent to buy seeds.
When x=55, then
Hence, If Samantha plants 55 seeds, the she spent total amount of $14.74.
Answer:
a) The null and alternative hypothesis are:
b) test statistic t=-5.59 (df=499).
c) P-value=0
d) Reject the null hypothesis. The sample is enough evidence to reject the inventor's claim and to conclude that the run time is lower than 300 minutes.
Step-by-step explanation:
We have to perform an hypothesis test on the mean, with estimated standard deviation. We want to test the claim that the run time differs from 300 minutes.
The null and alternative hypothesis are:
The level of significance is 0.05.
The test statistic t is
The degrees of freedom are
The P-value for this t=-5.59, with 499 degrees of freedom is P=0. The null hypothesis is rejected.
The sample result is enough evidence to reject the inventor's claim, specially because the large sample size.