at current prices, roberta can drive her car 8.2 miles per dollar of gasoline that she buys. Roberta and three of her friends de
1 answer:
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Answer and Step-by-step explanation:
<u><em>→ Prime factorization of 1624 is :</em></u>
= 2 × 2 × 2 × 7 × 29
<u><em>→ Prime factorisation of 522 is :</em></u><em> </em>
= 2 × 3 × 3 × 29
<u><em>→ Prime factorisation of 1276 is :</em></u><em> </em>
= 2 × 2 × 29 × 11
→ <em> </em>
×
Answer:
And if we solve for a we got
And the limits for this case are: (214.4; 295.4)
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the annual precipitation of a population, and for this case we know the distribution for X is given by:
Where and
The confidence level is 95.44 and the signficance is and the value of
. And the critical value for this case is
Using this condition we can find the limits
And if we solve for a we got
And the limits for this case are: (214.4; 295.4)