The bradenton post polled 1,356 adults in the city to determine whether they wet their toothbrush before they put toothpaste on it. of the respondents, 54% said they wet it first. suppose 68% of all adults actually wet their toothbrush first. what are the mean and standard deviation of the sampling distribution?

Standard = 922

Mean = 827

Step-by-step explanation:

If they say 54% wet their toothbrush first, then that means that there are about  732 people who wet their toothbrush first. If they supposed 68%, then it will be about 922. So the standard is 922 as we know. To find the mean we add both and divide by two. So we get 1654/2 which equals 827

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )