Erica has 2.5 yards of fabric she wants to make two dresses that each requires 3 2/3 yards of fabric. at shop lot Market she buys an additional 5 1/3 yards of fabric at $4.58 per yard does. Does Erica has enough fabric to make the dresses. if yes how much fabric would she have left over if know how much more fabric does she need ​

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