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lozanna [386]
3 years ago
13

Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 6.3 parts

/million (ppm). A researcher believes that the current ozone level is at an excess level. The mean of 870 samples is 6.4 ppm. Assume the variance is known to be 1.00. Does the data support the claim at the 0.1 level?
Step 4 of 5 : Enter the decision rule.
Mathematics
1 answer:
lbvjy [14]3 years ago
8 0
Ngnnghgfvnnfghbcxbnnfgjkb. Ccxc
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If 3t-7=5t, then 6t =
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The answer is:  " -21 " .
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We are asked to solve for: "6t" ; which is: "6 * t" .
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Given:  3t − 7 = 5t ;  Solve for "t" ; then solve for "6t" ;

     3t − 7 = 5t ;   Subtract "3t" from each side of the equation;
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    3t − 7 − 3t  =  5t − 3t ;

to get:  -7  = 2t  ;

Divide EACH side of the equation by "2" ; to isolate "t" on one side of the equation; and to solve for "t" ;

-7/2 = 2t / 2 ;

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Now, solve for "6t" ;

  6 t = 6*(-3.5) = - 21 .   The answer is:  " -21 " .
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