Question

USE THE NORMAL CURVE TABLE TO DETERMINE THE PERCENT OF DATA SPECIFIED.A) BETWEEN z = -1.34 AND z = 2.24B) GREATER THAN z = -1.90C) TO THE RIGHT OF 1.78D) TO THE LEFT OF 1.62E) BETWEEN z = -1.53 AND z = -1.82

Answer 1

A. Given:

Between z = -1.34 and z = 2.24.

To find:

The per cent of the data specified.

Explanation:

From the normal curve table,

The value of z = 1.34 is 0.4099.

The value of z = 2.24 is 0.4875.

Adding those values we get,

$0.4099+0.4875=0.8974$

Converting into percentages,

$0.8974\times100=89.74\%$

Final answer:

The per cent of the data specified is 89.74%.