Your supervisor recently stated that older mobiles typically had a battery score of around 50, but had recently been improving. Test his claim at the 5% level of significance. (1 Mark)

Phone Sarnsung Galaxy S9+ Sarnsung Galaxy S9 iPhone I HTG U11 LG Aristo 2 LG 14+ Motorola Moto ES Motorola Moto IS Nokia 5 [2913] Sony Ipreia Sony Iperia 142 iPhone 3 Plus Google Pixel 2 Microsoft Lurnia ESD 1|nl'ooafone Smart VS 1|ul'olziafone Smart ES Blackberry Motion Blackberry Aurora Hisense Eleganoe 1[E?E] Hisense U952 Hisense TS Plus iPhone 1" LG GE Sony Iperia 142 Ultra Telstra Signature 2 Telstra Tough Max? Panasonio P112142]I ShaqrlSFSSDES Huawei Enjoy 3 Ratings Battery Score 91 9D 9D 3? T42 ?9 SD SE 39 92 SE 3? 9D 32 SS ?4 SS 32 SD THC} Hi 91 93 SE ?S ?5 ?1 ?9 ?9 TD ED 54 T9 43 ED SD SE ED 54 SE 54 54 49' ED 44 SD ED ED 4D 44 3 9 ED TI"? 5 5 ED 44 DD 1 SS