Yesterday, a factory used 2/3 of a tub of peanut butter. they use 1/6 of a tub of peanut butter for each batch of peanut butter cookies. how many batches of peanut butter cookies did the factory make yesterday?

Astudy claims that the mean age of online dating service users is 40 years. some researchers think this is not accurate and want to show that the mean age is not 40 years. identify the null hypothesis, h0, and the alternative hypothesis, ha, in terms of the parameter μ. select the correct answer below: h0: μ≥40; ha: μ< 40 h0: μ≤40; ha: μ> 40 h0: μ≠40; ha: μ=40 h0: μ=40; ha: μ≠40