This question is incomplete. I got the complete part (the boldened part) of it from google as:
The following 98% confidence interval was obtained for μ1 - μ2, the difference between the mean drying time for paint cans of type A and the mean drying time for paint cans of type B:
4.90 hrs < μ1 - μ2 < 17.50 hrs.
Answer:
A paint manufacturer made a modification to a paint to speed up its drying time. Independent simple random samples of 11 cans of type A (the original paint) and 9 cans of type B (the modified paint) were selected and applied to similar surfaces. The drying times, in hours, were recorded. The summary statistics are as follows. Type A Type B x 1x1equals=76.3 hr x 2x2equals=65.1 hr s 1s1equals=4.5 hr s 2s2equals=5.1 hr n 1n1equals=11 n 2n2equals=9 The following 98% confidence interval was obtained for mu 1μ1minus−mu 2μ2, the difference between the mean drying time for paint cans of type A and the mean drying time for paint cans of type B. What does the confidence interval suggest about the population means?
The mean difference for the 98% confidence interval, the drying times of the two types of paints are (4.90, 17.50). This implies that Type A paint takes between 4.90 and 17.50 hours more to dry than type B paint.
Step-by-step explanation:
The mean difference for the 98% confidence interval, the drying times of the two types of paints are (4.90, 17.50). This implies that Type A paint takes between 4.90 and 17.50 hours more to dry than type B paint.
Only positive values comprise the confidence interval which suggests that the mean drying time for paint type A is greater than the mean drying time for paint type B. The modification appears to be effective in reducing drying times.
Answer:
Prism Y
Prism Z
Step-by-step explanation:
Given
See attachment for sculpture
Solving (a) The dimension and volume of Y
From the attachment
18 in is the height of Z and 6in represents the length (height) of the unoccupied space by Y
So:
16 in is the total length of the sculpture and 10 in represents the length of Z
So:
10 in is the width of Z and 6in represents the length (width) of the unoccupied space by Y
So:
Hence, the dimension of Y is:
Volume is then calculated as:
Solving (b) The dimension and volume of Z
As identified in (a), the dimensions of Z are:
Volume is then calculated as:
Solving (c): Total volume of the sculpture.
To do this, we simply add up the volumes of Y and Z.
So, we have:
Answer: 10
Step-by-step explanation:
The first thing you do is put 6 over 3/5 as a whole fraction. So it'll look like
Then you divide it! 6 divided by 
That gives you the first answer. Then the next answer would be
Answer: 20
Answer:
can'T see it
Step-by-step explanation:
Answer:
P(both are red) = 5/18
Step-by-step explanation:
total counters = 9
red counters = 5
P(both red) = P(R1) n P(R2)
5/9 * 4/8 =5/18
5/9 because the red counters are 5 and the total number of counters are 9.
I multiplied by 4/8 because, after selecting the first red counter without replacement, the remaining is 4 and the total decreases to 8.
