The heights of dogs, in inches, in a city are normally distributed with a population standard deviation of 3 inches and an unknown population mean. if a random sample of 17 dogs is taken and results in a sample mean of 28 inches, find the error bound (ebm) of the confidence interval with a 90% confidence level.

1.2703

Step-by-step explanation:

Given : Sample size : n= 17, which is a small sample (n<30), so we use t-test.

Significance level :

Then , Critical value :

Standard deviation:

The formula to find the margin of error : -

Hence, the error bound (EBM) of the confidence interval with a 90% confidence level.=1.2703

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is:

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