Claim The standard deviation of pulse rates of adult males is less than 12 bpm. For a random sample of 169 adult males, the pulse rates have a standard deviation of 10.9 bpm. Complete parts (a) and (b) below. a. Express the original claim in symbolic form bpm (Type an integer or a decimal Do not round) b. Identify the null and alternative hypotheses ​

The tile along the edge of a triangular community pool needs to be replaced? ?

Asix-sided die of unknown bias is rolled 20 times, and the number 3 comes up 6 times. in the next three rounds (the die is rolled 20 times in each round), the number 3 comes up 6 times, 5 times, and 7 times. the experimental probability of rolling a 3 is 10 %, which is approximately % more than its theoretical probability. (round off your answers to the nearest integer.)

In a quadratic function of the form ax^2+bx+c, which of the following is not true? a. the y-intercept is c. b. if a is positive, the parabola opens up. c. the vertex has an x-coordinate of -b/2a. d. the axis of symmetry is the line y=-b/2a.