What value of z should we use when making a 98% confidence interval for p? 1) 2.33 2)1.75 3)it's impossible to make a 98% ci 4) 2.88

The value of z we should  use when making a 98% confidence interval for p is mathematically given as

x= 2.33

Option A

Generally, we solve for

1/2* 0.98 = 0.49

Using the Normal curve table we determine that the nearest value  0.4901 and its z value is 2.33

Option A

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Option 1) 2.33

Step-by-step explanation:

For the 98% confidence interval we have that the area between 0 and the z score is equal to:

98% corresponds to 0.98

then the area between 0 and z is half of that:

a = 0.98/2 = 0.490

Now you can search in a table, and you will find that the z-score for this is z = 2.326

So the correct answer is 1) 2.33

where the result is rounded up.

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step-by-step explanation: