The length of needles produced by a machine has standard deviation of 0.04 inches. Assuming that the distribution is normal, how large a sample is needed to determine with a precision of ±0.005 inches the mean length of the produced needles to 98% confidence?

The sample size is  

Step-by-step explanation:

From the question we are told that

      The standard deviation is  

       The  precision is

        The confidence level is 98%

Generally the sample size is mathematically represented as  

Where    is the level of significance which is mathematically evaluated as

        %

and   is the critical value of which is obtained from the normal distribution table as  2.326

  substituting values

x = 17

step-by-step explanation:

in the given figure, two triangles are inscribed in a circle where ∠bae ≅ ∠dae which makes the side be and de equal so we can write it as:

3x - 24 = x + 10

solving this equation for x to get:

3x - x = 10 + 24

2x = 34

x = 34/2

x = 17

therefore, the value of x = 17.

the answer is 9.8975

explanation:

when you multiply the "39.59" with the 25% it reduces it and shows its final discounted price. hope this !

step-by-step explanation: