Mary has rehearsed her ballet solo for five and a half hours. A week from now, she wants to have rehearsed at least a total of n
2 answers:
Answer:
2 hours per day
Step-by-step explanation:
Given : Mary has rehearsed her ballet solo for five and a half hours. A week from now, she wants to have rehearsed at least a total of nineteen and a half hours.
To Find : If she rehearses for the same amount of time each day for the next 7 days, at least how many hours must she rehearse per day?
Solution :
Mary has rehearsed her ballet solo =
She wants to have rehearsed at least a total of
So, hours left for rehearsel = 19.5-5.5= 14 hours
If she rehearses for the same amount of time each day for the next 7 days
So, she rehearsed each day = 14/7 = 2 hours
Hence she must rehearse for 2 hours per day
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Answer:
Yes, The analysis involves a statistical test.
The hypothesis are
Step-by-step explanation:
Consider the provided information.
Testing 500 right-handed participants on the reaction time of their left and right hands to determine if there is evidence for the claim that the right hand reacts faster than the left.
Yes, The above analysis involves a statistical test.
Where claim is right hand reacts faster than the left hand.
If right hand reacts faster that means the reaction time of right hand should be smaller than the reaction time of left hand.
Let to be the average reaction time of their right hands for the right-handed participants and
to be the average reaction time of their left hands.
Therefore, the hypothesis are