The last one, A decrease in the price of racket ball rackets
Susan bought a new computer. She purchased a mouse and earphones.
On the Earth's grid system, points are found using two imaginary lines. These imaginary lines are 1) parallels of latitude and 2) meridians of longitude.
On the Celestial system, declination and right ascension or hour angles is used in lieu of latitude and longitude, respectively.
The latitude or declination both measure north and south portion of the Earth's grid system or the Celestial system.
The longitude or right ascension both measure the east and west portion of the Earth's grid system or the Celestial system.
Minimum probability is 0.05, so we have to choose n such that expected frequency corresponding to 0.05 probability should be at least 5.
Let n = 5
Expected frequency = n*p = 5 * 0.05 = 0.25 < 5
Let n = 25
Expected frequency = n*p = 25 * 0.05 = 1.25 < 5
Let n = 50
then
Expected frequency = n*p = 50* 0.05 = 2.25 < 5
Let n = 100
then
Expected frequency = n*p = 100* 0.05 = 5 = 5
Thus, for n = 100, we get expected frequency = 5,
Thus, the minimum number of times the spinner should be spun to conduct this test is 100.
<h3>What is a probability?</h3>
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Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event.
Learn more about probability here,
brainly.com/question/743546
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