The following random sample was selected from a normal distribution: 4.5, 6.4, 2.3, 1.8, 5.3, then the 95% confidence interval to estimate the population mean is between

the 95% confidence interval to estimate the population mean is between  1.62 and 6.50

Step-by-step explanation:

given data

distribution = 4.5, 6.4, 2.3, 1.8, 5.3

so n = 5

confidence interval = 95%

to find out

the population mean is between

solution

first we calculate the mean i.e.

mean =  

mean =  4.5+ 6.4+ 2.3+ 1.8+ 5.3 / 5

mean = 4.06

now we calculate the standard deviation i.e.

standard deviation =  

standard deviation =  

standard deviation =  

standard deviation =  

standard deviation =  2.226544

so 95 % confidence interval is i.e. mean +/- t(5) * standard deviation/

here t(5) will be 2.45

so

95 % confidence interval=  4.06 +/- 2.45 * 2.226 /

95 % confidence interval= 1.62 and 6.50

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

other answer is correct. i had used the radius of the radius somehow. a website: