 , 23.06.2019 10:00 kelly1240

Johns electricity bill costs \$20.90 per month plus \$1.23 per kilowatt hour. how many kilowatt hours can he use and keep his monthly costs no more than \$109   Another question on Mathematics Mathematics, 21.06.2019 14:50
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Given z value let x be a normal random variable with standard deviation (d) = 1.65 (i) find the margin of error for a 90 percent confidence interval for mean corresponding to a sample size of 12 (3/100) (ii) interpret the result of question 3( (4/100) /- [cpt115] -5 (ii) with reference to question 3(d)(i), find an approximate 90 percent confidence interval for mean if the 12 sample values of x are as follows: 95 103 107 98 90 110 92 108 90 94 105 100 (7/100) interpret the result of question 3(d)(ii) (iv)
Johns electricity bill costs \$20.90 per month plus \$1.23 per kilowatt hour. how many kilowatt hours...
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