Questions A and B thank you!

AutoSave . Off) HW1 - Last saved by user - Co.. Search Daniel Vargas DV X File Home Insert Draw Design Layout References Mailings Review View Help Share Comments & Cut Calibri 11 ~ A" A Aa Ap Find [ Copy AaBbCCD AaBbCcD AaBb( AaBbCc AaBb( AaBbCcD AaBbCCD Paste Gc Replace BIU ab X x A LA 1 Normal 1 No Spac... Heading 1 Heading 2 Title Subtitle Subtle Em. Dictate Editor Format Painter Select v Clipboard Font Paragraph Styles Editing Voice Editor 3) (3pt) A stock market analyst wants to determine if the recent introduction of the IPhone 11 has changed the distribution of shares in the cellphone market. The analyst collects data from a random sample of cellphone customers. The table below shows the observed customers' share of cellphones (f.). When using this random sample, the analyst needs to be 99% confident of test results. The hypothesis to be tested follows: Ho: market shares have remained same Ha: market shares have changed Cellphone Current Observ. company Market Share Samsung Bt'0 100 Apple 0.50 120 LG 0.02 80 Totals 300 a. (2pt) Compute the test statistic for a chi-squared test. (you need to find expected values) b. (1pt) After the test, would you conclude that the introduction of the IPhone 8x has changed the market composition? Why? 1 Page 1 of 1 398 words CX Focus + 140% Type here to search 93 SONO9 W 890F ~ 0 23 0 6 4 P 3:28 PM 9/13/2021