Mathematics, 05.01.2020 13:31 miguel454545
Astudent ran out of time on a multiple choice exam and randomly guessed the answers for two problems. each problem had 5 answer choices – a, b, c, d, e – and only one correct answer. what is the probability that she answered neither of the problems correctly? write your answer as a fraction in simplest form.
Answers: 2
Mathematics, 21.06.2019 16:50
Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?
Answers: 3
Mathematics, 21.06.2019 18:00
Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?
Answers: 2
Mathematics, 22.06.2019 04:50
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
Answers: 3
Mathematics, 22.06.2019 05:00
As a salesperson you get $23/ day and $3.60/each sale you make. if you want to make at least $84. in one day, how many sales would need to make? a 15b 16c 17d 18
Answers: 1
Astudent ran out of time on a multiple choice exam and randomly guessed the answers for two problems...
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