Question Find the appropriate rejection regions for the large-sample test statistic z in these cases. (Round your answers to two decimal places. If the test is one-tailed, enter NONE for the unused region.) (a) A right-tailed test with 𝛼 = 0.01 z > z < (b) A two-tailed test at the 10% significance level z > z <

An internet company claims that customers will have a download speed of at least 10 Mb per second, even during busy periods. A sceptical customer collects the following data at 12 randomly chosen times (in Mb per second): 10.6 12.2 9.0 12.9 11.2 8.6 10.6 8.6 6.8 9.1 8.1 6.9 Does this provide evidence that internet speed is less than 10Mb per second, on average? Let u be the true mean download speed, in Mb per second. Then HO: u = 10 and Ha : u A 10 (Enter your numerical answers as exact values) The test statistic is -0.80 (Enter your answer correct to 2 decimal places) The test statistic comes from a t distribution with 11 degrees of freedom if Ho is true. (Enter the exact values) The P-value is 0.221 (Enter your answer correct to 3 decimal places) Hence, there is Click for List evidence against Ho, that is, there is Click for List evidence that the download speed is less than 10Mb per second. What assumptions did you make? Do these assumptions seem reasonable? Tick all answers that apply We have a random sample. (Seems reasonable, from what we know of the study design.) The data are normal (Does not seem reasonable, from the normal quantile plot.) The data are normal (Seems reasonable, from the normal quantile plot.) P is approximately normal (Seems reasonable, since nto (1 – 70) > 5.) We have a random sample (Does not seem reasonable.)

Receivables amount to P150,000. Receivable turnover is \( 10 \mathrm{x} \) and inventory is maintained at a level equal to 15 days' sales. Selling price per unit is P100 and has gross profit ratio of \( 40 \% \). A proposal has been made to change the term credit to \( \mathrm{n} / 60 \) to result to an increase in sales volume by one-third or by 5,000 units. Under this proposal, bad debts losses are estimated at \( 1 \% \) to \( 3 \% \) of sales but inventory turnover shall remain the same. How much is the increased accounts receivable? How much is the increased inventory? Compute for the increased operating income.

thank you😃, this will also help me in understanding the concept on this topic😃 2. Express the following absolute voltage gain to decibel power gain assuming that the resistance level are the same at the input and output. a. Av 2 b. Av = 21 C. Av = 0.2 d. Av = 10 =

Vibrations Homework 1 1. (15 pts) A system consists of two cantilever beams (with an equivalent spring constant k1 and k2, respectively) and k1 two springs (k3 and k4) combined in the configuration shown. For k1-k2-k3 k4-100 N/m, calculate the equivalent spring constant of the system with respect to the xcoordinate. k3 k2 Ka 2. (15 pts) In the figure, for a Vibrations Homework 1 1. (15 pts) A system consists of two cantilever beams (with an equivalent spring constant k1 and k2, respectively) and k1 two springs (k3 and k4) combined in the configuration shown. For k1-k2-k3 k4-100 N/m, calculate the equivalent spring constant of the system with respect to the xcoordinate. k3 k2 Ka 2. (15 pts) In the figure, for a 10 cm, b 20 cm, m1- m2 10 Kg, and Jo 10 Kg-m2, calculate the equivalent mass with respect to the x coordinate.

please help! The energy of a photon is related to its frequency through the following equation \[ E=h v \] where \( E \) is the energy, \( h \) is Planck's constant, and \( v \) is the frequency. Rearrange the equation to solve for \( v \). A photon has an energy of \( 4.10 \times 10^{-19} \mathrm{~J} \). What is the frequency of the photon?

An object with total mass mtotal = 17.3 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.9 kg moves up and to the left at an angle of θ1 = 20° above the –x axis with a speed of v1 = 25.5 m/s. A second piece with mass m2 = 5.1 kg moves down and to the right an angle of θ2 = 25° to the right of the -y axis at a speed of v2 = 21 m/s. What is the x-component of the velocity of the third piece? What is the y-component of the velocity of the third piece? What is the magnitude of the velocity of the center of mass of the pieces after the collision? Calculate the increase in kinetic energy of the pieces during the explosion.