A teacher figures that final grades in the chemistry department are distributed with 25% of students receiving an A, 25% of students receiving a B, 40% of students receiving a C, 5% of students receiving a D, and 5% of students receiving an F. At the end of a randomly selected semester, the following number of grades were recorded. Calculate the chi-square test statistic chi Subscript 0 Superscript 2χ20 to determine if the grade distribution for the department is different than expected. Use alphaαequals=0.01.

the answer is 11.2 (i know i’m late)

she will sew have sewn five dresses   and be 1/3 done with the sixth one in an hour.

step-by-step explanation:

3/4 of an hour=45 mins

lucy makes 1 dress per 11.25 minutes

45 mins+11.25 mins=56.25 mins

60 mins- 56.25 mins=3.75 mins

3.75 mins is 1/3 of of 11.25 mins

therefore she the other 1/3 would be part of the hour and she will have sewn 5 dresses and begun the sixth.

contact me if you have any questions you are welcome.

3

step-by-step explanation:

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answer: 1 box of pens at the store ? ? pens in the box