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seorang penyellalk bernastal untuk mengul dakwaan banawa umur puraia pengawal keselamatan di Ocean City adalah lebih besar daripada 24 tahun. Dia memilih satu sampel seramai

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seorang penyellalk bernastal untuk mengul dakwaan banawa umur puraia pengawal keselamatan di Ocean City adalah lebih besar daripada 24 tahun. Dia memilih satu sampel seramai 36 orang pengawal dan mendapati min sampel adalah pada umur 24.7 tahun, dengan sisihan piawai adalah dua (2) tahun. A researcher wishes to test the claim that the average age of security guards in Ocean City is greater than 24 years. She selects a sample of 36 guards and finds the mean of the sample to be 24.7 years, with a standard deviation of two (2) years. Adakah terdapat bukti untuk menyokong dakwaan pada a = 0.05? Tunjukkan semua langkah yang digunakan dengan jelas. Is there evidence to support the claim at a = 0.05? Show all steps used

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