Answer:
(a) The sample size required is 2401.
(b) The sample size required is 2377.
(c) Yes, on increasing the proportion value the sample size decreased.
Stepbystep explanation:
The confidence interval for population proportion p is:
The margin of error in this interval is:
The information provided is:
MOE = 0.02
(a)
Assume that the proportion value is 0.50.
Compute the value of n as follows:
Thus, the sample size required is 2401.
(b)
Given that the proportion value is 0.55.
Compute the value of n as follows:
Thus, the sample size required is 2377.
(c)
On increasing the proportion value the sample size decreased.
2) Predict the number of tips that would be collected if 100 costumers were served at the restaurant on a given day. Explain your reasoning.
3)EXPLAIN how to use the regression calculator to make a reasonable prediction given a data table
(I don't know how to attach more than 1 picture by the way )
Answer:
1) y = 1.8741176487x + 3.655964863
2) About $191 using the equation, about $180 or more using the data you are given.
3) I can use the regression calculator by using the largest number of customers you have in the data set and lowest number of customers and compare them to see if the numbers are in ascending or descending order.
Answer: C
Stepbystep explanation:
When looking at compound inequalities, the inequalities are very important. You can see that on the graphs, there are some points that have a white open circle and others have blue, closed circle. The 2 different circles tells you the inequality itself. If you see ≤ or ≥, it is a closed circle. This is a closed circle because it is less than/greater than or equal to. That means it is also equal to the point, therefore it is a closed circle. If you see < or >, it is an open circle. That means it is not closed because it is greater than. It is not equal to on that specific point.
Now that we have covered the basics, we can start to eliminate. our first condition is n<2. Above, we have established that < is an open circle. We can eliminate A and B because the points on 2 are both closed circles.
That leaves us with C and D. Since C and D both follow the points, let's look carefully at what the inequality tells us. n<2 means n is less than 2. This means the arros should be pointing in the left side. As you go more towards the negative, the smaller the number becomes.
We can eliminate D because at 2, the numbers are going towards the right, not the left.
Therefore, our answer is C.
Answer:
Stepbystep explanation:
For A:
For B:
For C:
I hope this helps!
Answer:
A > +1.5
B> 0.33
C> 0.1322
Stepbystep explanation:
The length of the line on the blueprint of the wall will be 18 inches.
Dilation is the process of increasing the size of an item without affecting its form. Depending on the scale factor, the object's size can be raised or lowered.
There is no effect of dilation on the angle.
An architect uses a scale of 3/4 inches to represent 1 foot on a blueprint for a building.
Then the scale factor of the blueprint will be
Scale factor = 3/4 inches per foot
If the east wall of the building is 24 feet long.
Then the length of the line on the blueprint of the wall will be
Length = 24 feet x scale factor
Length = 24 x (3/4)
Length = 6 x 3
Length = 18 inches
Thus, the length of the line on the blueprint of the wall will be 18 inches.
More about the dilation link is given below.
#SPJ2
Answer:
16 in.
Stepbystep explanation:
We have the ratio
How about let's make this easier. Easier is better, right? Let's get rid of the fraction 2/3. We will do that by multiplying 2/3 by 3 and 1 by 3 to get the equivalent ratio of
Now we need to know how many inches there would be if the number of feet is 24:
Cross multiply to get
3x = 48 so
x = 16 in.
16
12
8
20 16 12

4
48
12
16 2024
8
12
16
If the graph of the second equation in the system passes through (12, 20) and (4,12), which statement is true?