Answer:
B. 61%
Step-by-step explanation:
When we have the standard deviation of a sample, we use the t-distribution.
The width of an interval is related to the margin of error, which is given by the following equation:
M = T*s
In which T is related to the confidence level(and the sample size) and s is the standard deviation of the sample. Higher confidence levels have higher values of T.
A higher margin of error means that the interval is wider. To have a higher margin of error, we desire a higher value of T, which is achieved with a higher confidence level.
So the correct answer is:
B. 61%
Total no. of buttons = 300 + 700 + 1000
+ 500 = 2500
Possibility for a person to pick a pink button = 300/2500 = (3/25)%
Amount of pink buttons she can expect her friends to pick = 50(3/25) = 6
She can expect to make 6 pink barrettes.
The real distance fro the shop to the store is 24 km
<em><u>Solution:</u></em>
Given that, Jakes map shows the distance from the bake stars cafe to the restaurant supply store as 3 centimeter
Scale of the map is 1 centimeter to 8 kilometers
Therefore, scale is:
Let "x" be the real distance from the shop to the store
Then by proportion, we get,
Thus real distance fro the shop to the store is 24 km
(x - 2)^2 will always be positive and will have a minimum value of 0
so f(x) will have minimum of 2
Range is [2,∞)
(93+67+78+44+123)/5=405/5=81 pizzas per day on average
C is your answer.
