Someone help me please !
...
Answers: 2
Mathematics, 21.06.2019 18:20
The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%
Answers: 1
Mathematics, 22.06.2019 02:30
In july, the average temperature in one us city was 29°c. by december, the average temperature had fallen by 29°c. explain why the average temperature in december was 0°c.
Answers: 3
Mathematics, 22.06.2019 03:30
Atechnician compares repair costs for two types of microwave ovens (type i and type ii). he believes that the repair cost for type i ovens is greater than the repair cost for type ii ovens. a sample of 6767 type i ovens has a mean repair cost of $79.79$79.79. the population standard deviation for the repair of type i ovens is known to be $19.18$19.18. a sample of 5555 type ii ovens has a mean repair cost of $75.24$75.24. the population standard deviation for the repair of type ii ovens is known to be $21.40$21.40. conduct a hypothesis test of the technician's claim at the 0.050.05 level of significance. let μ1μ1 be the true mean repair cost for type i ovens and μ2μ2 be the true mean repair cost for type ii ovens. step 2 of 4 : compute the value of the test statistic. round your answer to two decimal places.
Answers: 2
Mathematics, 22.06.2019 04:30
Whats the area of a square is 16 cm square. the square is the base of a cube. what is the surface area of the a. 16cm2 b. 32cm2 c. 64cm2 d. 96cm2
Answers: 2
Social Studies, 15.12.2020 18:10
Biology, 15.12.2020 18:10
Mathematics, 15.12.2020 18:10
Mathematics, 15.12.2020 18:10
Mathematics, 15.12.2020 18:10
English, 15.12.2020 18:10
Mathematics, 15.12.2020 18:10
Arts, 15.12.2020 18:10
Chemistry, 15.12.2020 18:10
Mathematics, 15.12.2020 18:10