Answer:
99% confidence interval bto estimate the average price customers are willing to pay per phone is between a lower limit of $471.356 and an upper limit of $514.
Step-by-step explanation:
Confidence interval = mean + or - Error margin (E)
mean = $492.678
sd = $26.4871
n = 14
degree of freedom = n - 1 = 14 - 1 = 13
confidence level = 99%
t-value corresponding to 13 degrees of freedom and 99% confidence level is 3.012
E = t×sd/√n = 3.012 × $26.4871/√14 = $21.322
Lower limit = mean - E = $492.678 - $21.322 = $471.356
Upper limit = mean + E = $492.678 + $21.322 = $514
99% confidence interval to estimate the average price customers are willing to pay per phone is between $471.356 and $514.
Answer:
36
Step-by-step explanation:
I did the math... 300m is .3km and 30s x 2 = 1min x 60 = 1hr
Convert the percentage into a decimal:
Set up a proportion using the hours Andrea worked, and the percentage compared to Carmen's workload:
The numerator will represent the hours worked, and the denominator will represent the percentage when compared to Carmen's workload.
Cross multiply the fractions:
Divide both sides by 0.45 to get x by itself:
Carmen worked
20.56 hours last week.
Answer:
Each latte is 4.50
Step-by-step explanation:
45-18=27
27/6= 4.5
<h3><u>The height of the top of the ladder from the ground is 4.53 m</u></h3>
Step-by-step explanation:
<h2>Given:</h2>
length of ladder =5 m
Angle formed = 65°
Let h be the Height of the top of the ladder from the ground
<h2>Required:</h2>
Height of the top of the ladder from the ground
<h2>Equation:</h2>
SOH-CAH-TOA
Since the hypotenuse side is given and what we are to solve is the opposite side, use SOH
<h2>Final Answer:</h2><h3><u>The height of the top of the ladder from the ground is 4.53 m</u></h3>
<em>Please refer to the photo for the illustration</em>