Atown has 685 households. the number of people per household is normally distributed with the mean of 3.67 and the standard deviation of 0.34. approximately how many households have between 2.99 and 4.01

560 households.  

Step-by-step explanation:

We have been given that a town has 685 households. the number of people per household is normally distributed with the mean of 3.67 and the standard deviation of 0.34.

Let us find z-score corresponding to sample scores, 2.99 and 4.01, using z-score formula.

, where,

,

,

,

.

Let us find z-score for sample score 2.99.

Let us find z-core for sample score 4.01.

Now let us find probability of z-score greater than -2 and z-score less than 1.

We will use formula: to solve our problem.

Using normal distribution table we will get,

So, the probability of house holds between 2.99 and 4.01 is 0.81859. To find the number of households between 2.99 and 4.01, we will multiply our probability by total number of households.

Therefore, approximately 560 households have between 2.99 and 4.01.

i think there was a typo. you wrote pat brings 3 quarts of ice-cream to the party. each serving of ice-cream is 1 6 quart. how many total servings of ice-cream does pat bring to the party? i think the bold is supposed to be 1/6. so 1 quart of ice cream = 6 servings. 6 * 3 = 18.

i think it is 18

step-by-step explanation: