420 / 2 = 210
210 / h = 105
210 / d = 210
h = 2
d = 1
they selled 105 burgers and 210 hot dogs. hope i helped ;)
Step-by-step explanation:
the number got divided by 100
it's actually 5607/100
"/"means divided
5607 ÷ 100=56.07
Answer:
The answer is 75 and 85.
Step-by-step explanation:
If the instrument measures in units of 10, then the measurement could be 5 units on either side of 80 (80 − 5 = 75, 80 + 5 = 85). Any value between 75 and 85 would be measured as 80.
Answer:
Step-by-step explanation:
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
Let X the random variable that represent the Student scores on exams given by a certain instructor, we know that X have the following distribution:

The sampling distribution for the sample mean is given by:
The deduction is explained below we have this:
Since the variance for each individual observation is
then:
And then for this special case:
We are interested on this probability:
And we have already found the probability distribution for the sample mean on part a. So on this case we can use the z score formula given by:
Applying this we have the following result:
And using the normal standard distribution, Excel or a calculator we find this:
Answer:
H: Plots 1 & 2
Step-by-step explanation: