Answer:
test statistic, z = −1.74
Step-by-step explanation:
given data
students n = 100
mean time x = 41.13 seconds
σ = 5
we consider µ = 42
solution
we get here The test statistic that is express as
test statistic, z = ......................1
put here value and we will get
test statistic, z = \frac{41.13-42}{\frac{5 }{\sqrt{100}}}
test statistic, z = −1.74
I think maybe 3 6/97 but i'm not sure about that.
Answer:
Step-by-step explanation:
Point-slope :
m = slope
Answer:
Option A.
Step-by-step explanation:
Note: Let as consider, we have to find the total amount after 9 years.
It is given that,
Principal amount = $1000
Rate of compound (yearly) interest = 15% = 0.15
Time = 9 year
The formula for total amount is
where, P is principal, i is rate of interest and n is number of years.
Substituting P=1000, i=0.15 and n=9, we get
So, the total amount after 9 years is $3517.88.
Therefore, the correct option is A.
Answer:
option (c)
42 minutes
Step-by-step explanation:
Given in the question:
cruising speed of passenger plane = 570 miles/hour
distance passenger plane travelled = 400 miles
<h3>Formula to use</h3>
distance = speed x time
time = distance / speed
time = 400 / 570
= 0.7018 hours
1 hour = 60 minutes
228000 hours = 60 x 0.7018 minutes
= 42.1052 minutes
≈ 42 minutes
Closest to the length of time, in minutes, that Captain Tellez's plane will maintain cruising speed is 42 minutes.