问题
单项选择题
假设检验中的第二类错误是指（）。
A．拒绝了实际上成立的H0
B．不拒绝实际上成立的H0
C．拒绝了实际上成立的H0
D．不拒绝实际上不成立的H0
E．拒绝H0时所犯的错误
答案
参考答案：D
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假设检验中的第二类错误是指（）。
A．拒绝了实际上成立的H0
B．不拒绝实际上成立的H0
C．拒绝了实际上成立的H0
D．不拒绝实际上不成立的H0
E．拒绝H0时所犯的错误
参考答案：D
Skylar is a four-year-old girl. When she learned about Disneyland from TV last July, she began to money. She hoped that she could there some day. One day her parents surprised her with a trip to Disneyland, but they didn’t her to use the money in her money box.When they returned, it was Chrismastime. Skylar decided to buy gifts her money. But when she a show on TV about a local homeless shelter(收容所) Called “The Road House”,she asked her mother again and again “homeless” meant and why those children needed warm clothes. She couldn’t get the homeless children off her . Before Christmas, Skylar’s mother took her to a to buy gifts. Instead of buying gifts for herself or her family, Skylar a coat and some socks for a little girl in the shelter. When Skylar got home, she the things she had bought in a beautiful box.Skylar was very at waiting for Christmas! She was not thinking about Santa Claus or the gifts she would . She was thinking about going to the shelter and giving gifts to a child.On Christmas Eve, Skylar and her family drove to the shelter and she gave the beautiful to a girl, Skylar was very happy helping someone else, her family decided to make the journey to the homeless shelter a tradition. What a beautiful heart young Skylar has!
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