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Calculate the percent composition of Iron and oxygen in the product if the mass of iron is 7.874g and mass of oxygen is 1.429g
If the work required to speed a car from 10 km/h to 20 km/h is 5.0 x 103 J, what would be the work required to increase its speed from 20 km/h to 30 km/h.
What is the largest three digit number that you can make if you use 20 stripes?
In an experiment one finds that a force of 160 N produces a stretch of 8.00 cm in a
given spring. What is the spring constant of the spring?
II. Determine if one-tailed test or two-tailed test fits the given alternative hypothesis.
1. The mean height of Grade 12 students is less than 66 inches.
Answer: ___________________________
2. The standard deviation of their height is not equal to 5 inches.
Answer: ___________________________
3. Male Grade 7 and Grade 12 students differ in height on average.
Answer: ___________________________
4. The proportion of senior male students’ height is significantly higher than the senior female students.
Answer: ___________________________
5. The average grade of Grade 11 students in Statistics is lower than their average grade in Calculus.
Answer: ___________________________
. If the stress produced in stretching a wire is 5.00 x 10 6 N/m2 by an applied force of
10.0 N, what is the cross-sectional area of the wire?
I. State the null and alternative hypothesis for each statement.
1. A light bulb manufacturer claims that the mean life of a certain type of light bulb is more than 750 hours.
H0: _____
Ha: _____
2. A study claims that the mean survival time for certain cancer patients treated immediately with chemotherapy and radiation is 24 months.
H0: _____
Ha: _____
3. A medical trial is conducted to test whether or not a new medicine reduces uric acid by 50%.
H0: _____
Ha: _____
4. We want to test whether the general average of students in Math is different from 80%.
H0: _____
Ha: _____
5. We want to test whether the mean height of Grade 8 students is 58 inches.
H0: _____
Ha: _____
Determine the area of the region bounded by x = y²-y-6 and x = 2y +4.
Determine the area of the region bounded by x = y²-y-6 and x = 2y +4.
Determine the area to the left of g(y) = 3-y2 and to the right of x = -1
