Create a new conditional statement using the Law of Syllogism from these true statements: 1. If a figure is a rhombus, then it is a parallelogram. 2. If a figure is a parallelogram, then it has two pairs of parallel sides.
Find the line of best fit for Florida's population y (in millions) after 2013, using years x. Round slope to 3 decimal places and y-intercept to 2 decimal places.
Find the percentage of riders at Splash City Water Park who go on more than 10 rides, given a normal distribution with mean 8.4 and SD 2. Round to the nearest percent.
Calculate the mean of Ashley's friends' expenses: \$ 2,800, \$ 1,990, \$ 2,005, \$ 2,400, \$ 1,860, \$ 2,200, \$ 2,000. Is it higher or lower than \$ 2,110? What must Ashley spend for the average to be \$ 2,110?
You're comparing phone costs from two carriers. Carrier A's costs for months x are: 3 months: \500,6months:$650,9months:$800,12months:$950,15months:$1100.CarrierB′scostisgivenbyy=55x+300$. 1. Which carrier has a lower initial fee? 2. When do total costs equal for both carriers?
Key Club students at Peconic High made trips to Echo Beach. a. Total students?
b. Find mean, median, mode, range, variance, and standard deviation (round to 1 decimal).
c. For a normal distribution with mean 6.2 and SD 2, what % went >8 times? (round to nearest %)
d. What % went 5-7 times? (round to nearest %)
Shannon's train fares from NYC to D.C. are: 49, 88, 119, 133, 161, 173, 272. Find the percentile ranks for \$119 and \$272, then identify the fare with a rank of about 82\%.
The height of a building is proportional to floors. For 9 floors, height is 135 ft. a. Find the height-to-floors ratio and its unit rate. Explain its meaning. b. What would be the height for 15 floors?
At Van Buren High, students' summer incomes are normally distributed: mean \$1,751, SD \$421. Find:
a. Percent with incomes between \$1,000 and \$2,000?
b. Students with incomes less than \$800?
Create frequency distribution tables for scores from 'Low Number-Talk Parents' (2,1,2,3,4,3,3,2,2,1,5,3,4,1,2) and 'High Number-Talk Parents' (3,4,5,4,5,4,2,3,5,4,5,3,4,5,4).
Predict heart weight (g) from body weight (kg) using regression. (i)
(a) Model: y^=−0.339+4.028x
(b) Intercept: Expected heart weight at 0 kg is −0.339 g.
(c) Slope: Each kg increases heart weight by 4.028 g.
(d) R2: Body weight explains 64.65% of heart weight variability.
(e) Correlation coefficient: 0.8049
Calculate expected values under the null hypothesis for party affiliation and support of full-body scans. (a) Expectation for Republicans not supporting: 48
(b) Expectation for Democrats supporting: ?
(c) Expectation for Independents unsure: 22
Analyze responses from 825 voters on oil drilling in CA. Perform a chi-square test for college grads vs non-grads at α=0.05. State hypotheses, calculate test statistic (2 decimal places), and find p-value (3 decimal places). Note data discrepancies.
An outdoor concert arena's attendance drops with snow. Analyze data and answer: (a) Is a linear model appropriate? Yes/No
(b) Find slope and y-intercept: Attendance = (Inches of Snow) +
(c) Predict attendance for 9.1 inches of snow.
Identify the hyphen notation for the element with 15 electrons and 15 neutrons: 1. phosphorus-30 2. silicon-30 3. sin0−60 4. vinospliomestal 5. flicrine-15 6. sulfur-3 7. oxyentistis