Out of 1500 students at a school 85% made grade check. How many students passed grade check?
1 answer:
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Answer:
Step-by-step explanation:
Quotient of two numbers also means the result of the two numbers after division.
If the quotient of a number t and 4.2 is at most 15., this can be expressed using the inequality;
<em>(note that at most 15 means that the highest value we can have is 15 after taking the quotient of the number hence the reason of the inequality sign.)</em>
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On solving the inequality for the variable t
<em>Hence t is at most 63</em>
Answer:
The calculated t-value is t=0.47.
Step-by-step explanation:
<em>The question is incomplete:</em>
<em>"Americans typically eat quickly and do not spend time enjoying their meal. A researcher plans to test if those trained in mindfulness will take more time to enjoy their meal (that is, they will spend more time eating than the general population). The general population spends an average of 68 minutes per day combined eating their three meals. The researcher trains a sample of 16 individuals in mindfulness and then collects data on how long they spend eating per day. The sample mean for those trained in mindfulness equals 74; the SS = 150. What is the calculated t-value? Round your answer to two decimal places."</em>
The degrees of freedom are (n-1)=(16-1)=15
The standard deviation is:
The t-value can be calculated as: