In 2020, ScrappyPhone held 11% of the cell phone market in the U.S. ScrappyPhone management suspects...

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In 2020, ScrappyPhone held 11% of the cell phone market in the U.S. ScrappyPhone management suspects its market share is growing and wants to analyze whether this is true. A national survey in 2021 showed that 120 out of 1000 households surveyed have their cell service with ScrappyPhone. If z = 1.01 and a = .05, what would you conclude about the ScrappyPhone market share in the 2020-2021 period? a) Reject Ho. There is not statistical evidence that the 2021 market share is different than 2020. b) Reject Ho. There is statistical evidence that the 2021 market share is different than 2020. Oc) Do not reject Ho. There is not statistical evidence that the 2021 market share is different than 2020. d) Do not reject Ho. There is statistical evidence that the 2021 market share is different than 2020. In 2020, ScrappyPhone held 11% of the cell phone market in the U.S. ScrappyPhone management suspects its market share is growing and wants to analyze whether this is true. A national survey in 2021 showed that 120 out of 1000 households surveyed have their cell service with ScrappyPhone. If z = 1.01 and a = .05, what would you conclude about the ScrappyPhone market share in the 2020-2021 period? a) Reject Ho. There is not statistical evidence that the 2021 market share is different than 2020. b) Reject Ho. There is statistical evidence that the 2021 market share is different than 2020. Oc) Do not reject Ho. There is not statistical evidence that the 2021 market share is different than 2020. d) Do not reject Ho. There is statistical evidence that the 2021 market share is different than 2020.

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