Susan, Deon, and Felipe sent a total of 160 text messages during the weekend. Felipe sent 4 times as many messages as Susan. Deo
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Answer:
The 't' test statistic = 1.46 < 1.69
The test of hypothesis is H 0 :μ = 800 is accepted
A sample of 30 bulbs are found came from average µ= 800
Step-by-step explanation:
Step 1:-
Given population of mean μ = 800
given size of small sample n =30
sample standard deviation 'S' = 45
Mean value of the sample χ = 788
Null hypothesis µ =800
alternative hypothesis µ ≠ 800
<u>Step 2</u>:-
The 't' test statistic t =
t = = 1.4607
<u>Step 3</u>:-
The degrees of freedom γ = n-1 = 30-1 =29
From "t" value from table at 0.05 level of significance ( t = 1.69)
The calculated value t = 1.4607 < 1.69
Therefore The null hypothesis H_{0} ' is accepted.
<u>conclusion</u>:-
A sample of 30 bulbs are came found from average µ= 800
The maximum number of miles the truck can be driven so that the rental cost is at most is
Further explanation:
Given:
A local company rents a moving truck for
Rent per mile is if the truck moves more than 1000 miles.
Explanation:
The rental cost of the truck is if he drove less than 1000 miles.
The rental cost of the truck can be expressed as follows,
The rental cost is at most
The maximum number of miles can be obtained as follows,
The maximum number of miles can be obtained as follows,
The maximum number of miles the truck can be driven so that the rental cost is at most is
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Answer details:
Grade: High School
Subject: Mathematics
Chapter: Linear inequality
Keywords: local company, rents, moving, truck, $750, $0.59, maximum, 1000 miles, $1000, at most, at least, number of miles, rental cost, driven over