Mathematics, 06.08.2019 06:10, sama3638
What happens to the width of a confidence interval for a population mean if the level of confidence is increased without changing the sample size? assume that the population standard deviation is unknown and the population distribution is approximately normal.
a) the margin of error will decrease because the critical value will decrease. the decreased margin of error will cause the confidence interval to be narrower. b) the margin of error will increase because the critical value will decrease. the increased margin of error will cause the confidence interval to be wider. c) the margin of error will decrease because the critical value will increase. the decreased margin of error will cause the confidence interval to be narrower. d) the margin of error will increase because the critical value will increase. the increased margin of error will cause the confidence interval to be wider.
Answers: 2
Mathematics, 21.06.2019 20:00, ertgyhn
In new york city at the spring equinox there are 12 hours 8 minutes of daylight. the longest and shortest days of the year very by two hours and 53 minutes from the equinox in this year the equinox falls on march 21 in this task you use trigonometric function to model the hours of daylight hours on certain days of the year in new york city a. what is the independent and dependent variables? b. find the amplitude and the period of the function. c. create a trigonometric function that describes the hours of sunlight for each day of the year. d. graph the function you build in part c. e. use the function you build in part c to find out how many fewer daylight hours february 10 will have than march 21. you may look at the calendar.
Answers: 1
Mathematics, 21.06.2019 21:50, gamergladiator43
Tamar is measuring the sides and angles of tuv to determine whether it is congruent to the triangle below. which pair of measurements would eliminate the possibility that the triangles are congruent
Answers: 1
Mathematics, 21.06.2019 22:00, JNH16
The numbers on a football field indicate 10 yard increments. you walk around the perimeter of a football field between the pylons. you walk a distance of 30623 yards. find the area and perimeter of the indicated regions. write your answers as mixed numbers, if necessary. a. one end zone: perimeter: yd area: yd2 b. the playing field (not including end zones): perimeter: yd area: yd2 c. the playing field (including end zones): perimeter: yd area: yd2
Answers: 1
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