In the past, a company used to produce 40 tons of a certain food per day on average. Now, using a new technology, the mean daily yield of the food for a random sample of 25 days of production is 45 tons with a standard deviation of 5 tons. Assume that the daily yield of this food is normally distributed. Company claims average food per day has increase now compared to the past. A. Set up null and alternative hypothesis for the test
B. Identify the test, Calculate critical value under 5% significance level
C. Calculate the test statistic
D. Carry out the test, state your results.

What are the solution(s) to the quadratic equation x2 – 25 = 0? o x = 5 and x = -5ox=25 and x = -25o x = 125 and x = -125o no real solution

What is the solution to the division problem below x3+x2-11x+4/x+4

Which scenarios are most effectively explored by conducting an experiment? there is more than one correct answer. select all that apply. researchers want to study the effectiveness of a particular drug for treating migraines. they want to know which dosage of the drug yields the best results with the least side effects. to ensure fair results, the researchers want to ensure that participants and dosage administrators do not know which dosage participants receive. a teacher wants to plan a class fieldtrip and quickly determine where students prefer to go for the class fieldtrip. a car mechanic wants to know which of two engine brands makes better-performing engines. he wants to test the engines in identical situations and rate their performance in a way that can be fairly measured. a chemist studies the properties of a metal compound. she wants to know how the sample size of the metal affects its ability to conduct electricity. she wants to conduct the research in a controlled environment to minimize bias. a realty company wants to know the average income of its clients. the company wants to gather data income from current clients.