Answer:
Critical value:
The 90% confidence interval for the population mean bromide concentration is (0.376, 0.39).
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so . This value of z is the critical value
Now, find M as such
In which is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the mean subtracted by M. So it is 0.383 - 0.0066 = 0.376 cc/cubic meter
The upper end of the interval is the mean added to M. So it is 0.383 + 0.0066 = 0.39 cc/cubic meter
The 90% confidence interval for the population mean bromide concentration is (0.376, 0.39).
Answer:
Container holds more than 3 cups of sugar.
Step-by-step explanation:
We are given that,
Amount of sugar used by Dee = cups.
Now, as the container holds 3 times the amount of sugar used by Dee.
So, the amount of sugar container holds = = = 7 cups.
Thus, the container can hold 7 cups of sugar, which are greater than 3 cups of sugar.
Hence, the container holds more than 3 cups of sugar.
Answer:
2388.16 cubic inches
Step-by-step explanation:
Cylinder: 452.16
Rectangular prism: 1936