A principal at a large high school wants to estimate the number of days freshmen regularly ride the bus to school. The principal randomly selects 35 freshmen and asks them how many days per week they ride the school bus. The
principal constructs a 90% confidence interval for the true mean number of days freshmen ride the bus to school per
week. Which of the following would decrease the margin of error?
O using a sample of size 30
O using a sample of size 40
O constructing a 95% confidence interval
O constructing a 99% confidence interval

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

Write each fraction as an equivalent fraction with a denominator of 120then write the original fractions in order from samllest to largest

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.